cgs comments to Draft 1 test report (00024450)€¦ · 3 2nd Chance Design 23 Original Strap 1...

Testing Report

Shear Testing of the Self-Suspending Ballistic System (SSBS) used in Body Armor

Manufactured by Point Blank Enterprises, Inc.

Allen Price & Douglas Herrmann

April 15, 2018

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I. Executive Summary:

The test results demonstrated that under normal donning and doffing as simulated by shearing the Breathe-o-

Prene® strap from the c-clamp hook closure, the self-suspending strapping system weakens to a point where

the closure system does not have sufficient strength to securely support the weight of the vest on an officer.

This is exacerbated by the presence of the simulated sweat solution where the initial and subsequent shear

strength results are reduced significantly compared to ambient, dry conditions.

II. Introduction:

This testing was commissioned with the goal of evaluating the effectiveness of the Self-Suspending Ballistic

System (SSBS) utilized in Point Blank’s Concealable Body Armor under the normal donning and doffing by law

enforcement officers. Five (5) used ballistic vests (previously worn by police officers) were provided along

with nine (9) new, unused vests for this analysis. A test methodology was developed to simulate the normal

donning and doffing of the ballistic vest so that results could be evaluated over extended use. The test

method developed was ASTM D5169, Standard Test Method for the Shear Strength (Dynamic Method) of

Hook and Loop Touch Fasteners but modified to fit the unique closure system of the SSBS used in the vest

design. These modifications were necessary in order to test the efficacy of the SSBS system and to replicate

actual use in the field. Testing was completed at the Materials Science & Engineering laboratories at Clemson

University. In total, 32 test designs were evaluated with 775 shear tests being completed. In addition to

evaluating the new and used Breathe-o-Prene® strap materials, testing was also completed using a standard

Velcro® loop strap material to determine the differences between a designed “loop” side of a hook & loop

fastener system compared with the Breathe-o-Prene® strap currently being utilized. Samples were evaluated

in ambient conditions as well as after soaking in a salt water bath (simulated sweat) for 30 minutes designed

to replicate normal use in a humid or stressful environment.

III. Discussion:

The objective of this testing was to reproduce normal donning and doffing of Point Blank ballistic vests to

determine the effectiveness of the SSBS c-clamp closure system over repeated use. Based on significant field

experience and interviews with law enforcement officers, it was determined that the shear test most closely

represents how an officer normally disconnects the shoulder strap. At the end of a shift, an officer normally

pulls down on the vest portion to disengage the c-clamp closure system with a tug from their dominate hand

and after disconnecting the strap, then slides the vest off the other shoulder.1

IV. Samples:

New and used ballistic vests utilizing the SSBS were provided for testing. There were five (5) used vests and

three (3) new vests provided by David Cohen of Complex Law Group, LLC.2 The used vests were obtained from

officers experiencing closure failures in the field. Allen Price also purchased 6 new vests from Howard

Uniform Company, a local Baltimore distributer. The vests were inspected and pertinent details recorded

along with specific measurements of the SSBS closure system. The data tables 1 & 2 in the Appendix of this

1 Some officers choose to take their vests off over their heads as opposed disconnecting the shoulder connection. 2 One of the vests was ordered new through Galls, Inc. in April, 2017 and arrived with unused ballistic panels manufactured in 2012.

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report detail this information. In addition to these vests, a large number of extra “replacement” straps were

obtained from Point Blank to allow replicates to be completed. General loop strapping was obtained from the

manufacturers of Velcro® to compare performance of traditional loop material with the Breathe-o-Prene®

strapping.

V. Test Methodology: The testing used a modified ASTM standard for shear strength measurements. The

standard was modified slightly to fit the unique design of an SSBS vest and the desire to measure the

performance while maintaining the integrity of the closure system in the vest. See sample set-up photo in the

Appendix. Differences between ASTM Standard D5169 and our test protocol are detailed below:

Parameter Our Protocol Standard

Distance between jaws 4.5” 3”

Fastener/Overlap Area C-Clamp Closure 2” x 1”

Cylinder Diameter 6.5” 4.75”

Cylinder Weight ~12 pounds ~11 pounds

Roll Cycles 2 5

Care was taken to minimize variation and increase the repeatability of the methodology. All sample

preparation was performed by one individual and testing on the Instron performed by a second individual to

minimize variation. For each shear test performed, one operator carefully inserted the strap material into the

c-clamp on the ballistic panel. Upon proper placement of the strap material in the center of the c-clamp, the

top of the c- clamp was then closed easily to ensure the strap was centered in the c-clamp. An approximate

12 pound cylinder was then rolled back and forth twice (four rolls over the c-clamp) over the c-clamp to

provide a consistent closure force or pressure. The cylinder weight was chosen as it represents the

approximate force one would use to close the SSBS when pushing against their own shoulder and closely

approximates the ASTM standard cylinder weight. Once the closure system was prepared using these steps, it

was then handed to the Instron operator to perform the test run. The nature of the testing with repeated

shear testing increased the confidence in the results by allowing trends in the data to be seen. Shear testing

was performed on an Instron 1125 Shear Test Device. The device was calibrated after each sample was run.

The system automatically re-zeroed once it moved back to the prescribed starting location. Once the sample

was loaded into the hydraulic clamping jaws, the system reset to zero load prior to beginning the shear pulling

and measurement. All testing was completed using a calibrated 4.5” distance between the upper and lower

jaws (to facilitate the c-clamp in the vests being placed between the jaws) and a constant shear speed of 12”

per minute.

VI. Experimental Design:

The experimental design was comprised of two different test regiments. The first was a one day “sighting”

design where 9 different scenarios were evaluated. Each sighting scenario was designed to allow a more

thorough understanding of the reproducibility of the test protocol while also providing an estimate of the

range of results that may be expected on a larger scale test design. The second regiment (2 days) increased

the confidence of the initial results by performing replicates utilizing various vests and conditions. The second

regiment also included the additional variable of moisture’s impact on the closure’s performance by soaking

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the straps in a simulated sweat solution (5 grams of NaCl in 1 liter of filtered water) for 30 minutes and then

patting them dry using paper towels to the point of no visible moisture present. The 30 minute soak was

chosen as it represented the NIJ standard for evaluating ballistic vests under high moisture conditions (NIJ

0101.06 § 7.8.2 wet submersion test). Test runs were randomized to prevent any type of bias impacting the

results. The table below details each of the various test runs that were performed. (Strap Material key: BP =

Breathe-o-Prene®, Loop = Velcro® Loop)

Day Vest Description Run ID Strap Material

# of Shear

Tests Description of Test Run

1 New Galls Sighting 1 New BP 100 Evaluate New BP in New vest via multiple shear tests to failure

1 New Galls Sighting 2 New BP 10 Cut used 2' from strap and retested initial shear strength

1 New Galls Sighting 3 New Loop 1 Evaluate New Loop Strap - broke c-clamp

1 New Galls Sighting 4 New Loop 100 Evaluate New Loop in New vest via multiple shear tests to failure

1 NEW 1 Sighting 5 Original BP 20 Evaluate original strap - new as received

1 NEW 1 Sighting 5 New BP 2 Evaluate replacement strap installed via our protocol

1 USED 4 Sighting 6 New BP 20 Evaluate used hook system with new BP

1 USED 4 Sighting 7 Original BP 2 Evaluate worn BP strap from Officer

1 USED 1 Sighting 8 Original BP 2 Evaluate worn BP strap from Officer

1 USED 1 Sighting 8 New BP 20 Evaluate New BP in Used vest

1 Green - Used Sighting 9 Original Strap 1 Evaluate original strap - new as received

2 NEW 5 Design 1 Original BP 20 Evaluate original strap - new as received

2 NEW 5 Design 2 New Loop 20 Evaluate New Loop in New vest via multiple shear tests

2 NEW 5 Design 3 Wet BP 20 Evaluate simulated sweat's impact on performance on BP

2 NEW 5 Design 4 Wet Loop 20 Evaluate simulated sweat's impact on performance on loop

2 NEW 5 Design 5 New BP 5 Evaluate New BP in New vest via multiple shear tests

2 NEW 5 Design 6 Wet BP (2) 20 Replicate simulated sweat's impact with BP - Replicate of Design 3

2 NEW 5 Design 7 Wet Loop (2) 20 Replicate simulated sweat's impact with Loop - Replicate of Design 4

2 NEW 5 Design 8 Dry Loop 5 Repeat Design 2 after wet material testing

2 USED 2 Design 9 New BP 20 Evaluate New BP in Used vest - Replicate of Sighting 6

2 USED 2 Design 10 New Loop 20 Evaluate New Loop in Used vest

2 USED 2 Design 11 Wet BP 20 Evaluate simulated sweat's impact on performance on BP in Used vest

2 USED 2 Design 12 Wet BP (2) 20 Replicate Design 11 - simulated sweat's impact on performance on BP

2 USED 2 Design 13 New BP 20 Replicate of Design 9 plus impact of thin BP performance

2 USED 2 Design 14 New BP (thick) 5 Evaluate if BP thickness impact shear performace

2 USED 2 Design 15 Original BP 5 Evaluate worn BP strap from Officer

2 USED 3 Design 16 New BP 20 Replicate of Sighting 6 & Design 9

2 USED 3 Design 17 New BP from Design 16 1 Evaluate increased pressure's impact on shear performance

3 NEW 2 Design 18 Original BP 100 Evaluate Original BP in New vest via multiple shear tests to failure

3 NEW 2 Design 19 New BP 5 Replicate confirmation of Sighting 5 & Design 5

3 NEW 2 Design 20 Wet, new BP 20 Replicate of Design 3 & Design 6

3 NEW 5 Design 21 Wet BP from Design 3 5 Evaluated performance of previously wet and tested and now dried BP

3 New White Design 22 New White BP 20 Evaluate new White BP's performance

3 2nd Chance Design 23 Original Strap 1 Evaluate competitive vest performance

3 NEW 3 Design 24 Original BP 20 Evaluate original strap - new as received

3 NEW 3 Design 25 Wet BP 20 Replicate of Design 3 & Design 6

3 NEW 3 Design 26 New BP 5 Replicate confirmation of Sighting 5 & Design 5 & Design 19

3 Green - Used Design 27 Original Strap 1 Evaluate original strap - new as received

3 New White Design 28 Wetted BP from Design 22 5 Evaluated previous sheared and now wetted BP

3 New White Design 29 Wet, new BP 20 Replicate of Design 3 & Design 6 using White Vest

3 New White Design 30 New BP 5 Replicate of Design 22

3 NEW 5 Design 31 Retest Design #1 5 Evaluate if previously tested BP regained strength

3 USED 2 Design 32 Retest Design #9 5 Evaluate if previously tested BP regained strength

NEW 4 DNT Did not Test Use for additional testing as needed

NEW 6 DNT Did not Test Use for additional testing as needed

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VII. Results:

When performing the shear tests, the Instron 1125 Shear Test Device constantly records the force being

exerted to pull the two jaws apart while also recording the % elongation between the two jaws up to the time

of “failure” or the disengagement of the closure system. These results are recorded in the computer memory

and a print out of the results are made available for each shear test being completed. These print-outs for

each test run are contained in the Appendix of this report. As defined above, each test run had a specified

number of shear tests designed to be performed. For each test run, we have recorded in the data table below

the initial shear test result and also the results for the 5th, 20th and 100th shear test to allow comparisons

between the various test runs. We have categorized specific comparisons graphically to assist in the

visualization of the results.

A. Results Data Table:

Vest ID Run ID

Strap used

in pulls

Initial

Tensile

Initial

% Elong

5 Pull

Tensile

5 Pull

% Elong

20 Pull

Tensile

20 Pull

% Elong

100 Pull

Tensile

100 Pull

% Elong

5 Pull

Tensile

Loss

5 Pull

% Elong

Loss

20 Pull

Tensile

Loss

20 Pull

% Elong

Loss

100 Pull

Tensile

Loss

100 Pull

% Elong

Loss

New Galls Sighting 1 New BP 39.265 73% 30.3 63% 18.0 54% 4.5 18% 23% 15% 54% 27% 89% 75%

New Galls Sighting 2 New BP 44.947 88% 34.2 66% 24% 24%

New Galls Sighting 4 New Loop 83.214 7% 75.4 6% 71.3 6% 59.6 5% 9% 10% 14% 18% 28% 26%

NEW 1 Sighting 5 Original BP 40.1 66% 27.6 56% 15.4 41% 31% 16% 62% 38%

NEW 1 Sighting 5 New BP 31.8 65%

USED 4 Sighting 6 New BP 27.1 67% 18.2 56% 11.1 38% 33% 17% 59% 43%

USED 4 Sighting 7 Original BP 3.1 14%

USED 1 Sighting 8 Original BP 1.7 9%

USED 1 Sighting 8 New BP 22.8 60% 18.1 53% 11.0 37% 21% 12% 52% 38%

Green - Used Sighting 9 Original Strap 73.4 121%

NEW 5 Design 1 Original BP 45.7 75% 29.9 64% 15.3 53% 35% 14% 67% 29%

NEW 5 Design 2 New Loop 36.8 8% 31.2 5% 31.9 5% 15% 29% 13% 34%

NEW 5 Design 3 Wet BP 31.1 81% 17.1 62% 10.6 44% 45% 24% 66% 46%

NEW 5 Design 4 Wet Loop 33.4 7% 28.6 6% 28.7 6% 15% 24% 14% 20%

NEW 5 Design 5 New BP 37.5 72% 26.6 60% 29% 17%

NEW 5 Design 6 Wet BP (2) 29.6 84% 18.0 68% 10.7 50% 39% 20% 64% 41%

NEW 5 Design 7 Wet Loop (2) 28.9 6% 25.2 6% 24.3 5% 13% 0% 16% 15%

NEW 5 Design 8 Dry Loop 30.9 6% 27.5 5% 11% 15%

USED 2 Design 9 New BP 26.1 61% 18.9 52% 11.4 36% 27% 16% 56% 41%

USED 2 Design 10 New Loop 80.8 8% 58.1 6% 53.1 6% 28% 22% 34% 26%

USED 2 Design 11 Wet BP 23.4 72% 17.9 67% 13.3 57% 24% 8% 43% 21%

USED 2 Design 12 Wet BP (2) 15.0 59% 13.8 60% 11.2 56% 8% -2% 25% 5%


USED 2 Design 14 New BP (thick) 34.5 71% 30.6 69% 11% 3%

USED 2 Design 15 Original BP 5.5 25% 3.5 18% 37% 27%


USED 3 Design 17 New BP from Design 16 17.6 42%

NEW 2 Design 18 Original BP 33.9 56% 26.9 48% 14.1 35% 5.9 18% 21% 16% 58% 38% 83% 69%

NEW 2 Design 19 New BP 34.0 61% 25.3 50% 25% 18%

NEW 2 Design 20 Wet, new BP 26.2 60% 16.8 51% 10.4 35% 36% 16% 60% 41%

NEW 5 Design 21 Wet BP from Design 3 14.3 55% 10.2 50% 29% 9%

New White Design 22 New White BP 33.4 60% 21.6 50% 11.4 36% 35% 17% 66% 40%

2nd Chance Design 23 Original Strap 79.0 27%

NEW 3 Design 24 Original BP 37.2 54% 31.7 52% 20.4 44% 15% 2% 45% 19%

NEW 3 Design 25 Wet BP 26.8 69% 16.3 52% 10.7 38% 39% 24% 60% 45%

NEW 3 Design 26 New BP 28.7 59% 24.9 50% 13% 15%

Green - Used Design 27 Original Strap 64.2 89% 45.7 77% 29% 13%

New White Design 28 Wetted BP from Design 16.5 61% 10.5 44% 36% 27%

New White Design 29 Wet, new BP 24.1 68% 15.2 54% 8.7 38% 37% 20% 64% 44%

New White Design 30 New BP 24.7 51% 20.2 44% 18% 15%

NEW 5 Design 31 Retest Design #1 13.2 49% 11.4 39% 14% 21%

USED 2 Design 32 Retest Design #9 17.1 54% 14.8 47% 13% 14%

NEW 4 DNT Original BP

NEW 6 DNT Original BP

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Overall, it is clear that the SSBS connection loses a significant amount of its initial strength after only 20 shear

tests or approximately a month of normal donning and doffing of the ballistic vest. The bar chart below

demonstrates this clearly with the 18 different scenarios of Breath-o-Prene® providing strong confidence in

this performance weakness.

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B. Strength Performance over extended shear tests (100 shear tests): In this analysis, we continued shear

testing until the closure system provided little to no shear strength. This was to duplicate what was seen on

the used SSBS systems provided with the used vests returned from law enforcement officers. We also

included a generic Velcro® loop strap in this comparison. As we would expect an officer to remove their vest

after every shift or day’s work, we would expect approximately 20 “removals” of the vest per month assuming

they keep their vest on for the entire day’s activities. We would estimate that 100 shear tests would

represent approximately 5 months of normal use. As shown in the graph below, two samples of new Breathe-

o-Prene® (BP) exhibited consistent performance with a substantial drop-off in performance over the course of

these 100 tests losing over 85 % of their initial shear strength. Given that the weight of these ballistic vests

are approximately 4-5 pounds (based on size), once the shear force drops to this level, after approximately 75

shear tests, the closure would not support the weight of the vest and would not keep the vest firmly in place.

As is also evident, the Velcro® loop material shows a much higher initial shear force and shows a decrease in

shear strength of approximately 25 % but reaches a plateau of performance and then shows little

deterioration of shear strength.

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C. Strength Performance of New Vest vs Used Vests: In this analysis, we compared the shear strength

performance of new Breathe-o-Prene® straps in both a new vest and used vests. The six vests below are all

similar with a molded hook design (older style). As you can see, the used vests appear to show a drop-off in

performance as compared to a new vest with the same hook design. Using a two-sample t-test, the difference

in the average between the new and used vests is statistically significant at 95 % confidence level.

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D. Moisture’s Impact on Shear Strength: In this analysis, we wanted to determine if the normal humid, high

stress environment which would cause an officer to sweat would cause any change in performance of the

Breathe-o-Prene® strapping and the closure system. As part of the methodology, we soaked the straps in a

simulated sweat solution of 5 grams of NaCl in 1 liter of purified water. It was all done at standard room

temperature. The straps were submerged for 30 minutes and then removed and patted with paper towels

until no visible water was present. They were still somewhat “wet to the touch.” These wet straps were then

placed in the closure system as described earlier and the shear tests were performed. The graph below shows

the results from three sets of wet and dry straps. As shown in the graph, the water caused an approximate 25

% drop in initial shear strength and consistent drop-off as seen in other test runs using Breathe-o-Prene®. The

two blue lines (one solid and one dotted) are the wet and dry comparison using the same vest. In each case, a

new Breathe-o-Prene strap was used at the beginning of each test run. The average drop-off in shear strength

was 7.9 pounds.

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E. Hook Design Impact on Shear Strength: In this analysis, we compared the shear strength performance

differences of Breathe-o-Prene® in older model vests (2012-2015) with the new vests purchased in 2017. The

hook design changed from one that can be described as a molded hook design (possibly also referred to as a

low profile hook) used in the older vests to a hook design that is more wire-like. The wire-like design is more

like the original Velcro® designed hooks and could be described as wire loops that have been cut or broken so

that they can function as hooks. The hooks used in the older vests appear to be more aggressive and show

higher initial shear strength especially when used on the generic Velcro® Loop straps. The graph below shows

the difference. However, given that we had only one older style, new vest to compare against the newer

design hooks, our conclusion is somewhat limited. It should also be noted that measurements of the size of

the hook side tabs on the c-clamp closure (rounded tabs) showed changes in the vests between 2012-2017.

You would expect that shear strength performance would be proportional to the area of these tabs as it would

be proportional to the number of hooks potentially engaged.

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VIII. Conclusions:

- The test methodology seems to replicate actual use as our testing showed consistent results as

compared to used vests provided by officers in the field.

- The Breath-o-Prene® straps weaken over time based on repeated shear testing to a point where

they can no longer support the weight of the ballistic vest.

- Upon repeated shear strength testing, the surface of the Breathe-o-Prene® appears to be damaged

by the repeated shearing. The fibers appears to be “pulled out” of the matrix on one end and

thereby not forming a “loop” to which the hook may attach. See photomicrographs and image in

the Appendix (pages 4 & 5) of new and used straps.

- Using Velcro® loop strapping shows a reduction in shear strength upon repeated shearing but

reaches an equilibrium after approximately 30 tests and is fairly consistent over the remaining

testing (100 shear tests).

- White or black Breathe-o-Prene® shows no significant difference in performance.

- The presence of simulated sweat reduces the shear strength significantly.

- Used vests show a propensity of reduced shear strength when using new strapping which we would

hypothesize as being caused by deterioration of the hook and/or a reduction in the stiffness of the

hook. We have limited samples by which to draw a more definitive conclusion.

- The change in hook design from the Used Vests (molded hook design) to the New Vests (Wire hook

design) reduces the initial shear strength. Again, we have limited samples by which to draw a more

definitive conclusion.

IX. Summary:

It is our opinion that the Breathe-o-Prene® strapping is not designed for this type of application. In a typical

hook and loop fastener system, the loop side is designed to a strength to support continuous disengagements.

The system is designed so that the hook is the “weaker” component so that the loop remains intact and the

hook bends and releases the loop. In this manner, it can withstand continuous disengagements without

significant strength loss. With the Breathe-o-Prene® material, it is not designed as a loop material that can

withstand continuous disengagements. The Velcro® hook appears to be too strong and is “pulling out one end

of the fiber” from the Breathe-o-Prene® matrix. In doing so, the loop is not available to engage the hook upon

the next closure. Although the Breathe-o-Prene® does offers the comfort of flexibility and softness on the

shoulder, it does not allow for normal donning and doffing by law enforcement officers and thus should not be

used in this application.

Furthermore, it is our opinion that this inherent defect has the potential of putting the wearer at significant

risk of injury and/or death should the self-suspending strapping system fail in the field.

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X. Preliminary Response to Point Blank/Exponent Report:

Our initial observation is that the peel testing performed by Exponent does not replicate the normal donning

(field use) and doffing procedure many officers use each day. More specifically, Exponent did not test actual

used vests from officers in the field. Indeed, it did not even test vests. Rather, it tested brand new

component parts of the SSBS. Additionally, because there was only one shear test performed on each c-clamp

(bird’s mouth) and strap combination, Exponent was never able to replicate the failures reported by end users

in the field. We do not believe the failure mechanism is related to laundering cycles as this does not simulate

sweat or moisture in use as performed by Exponent (the system is dried prior to use). Nor does Exponent’s

testing put any stress on the SSBS system as a whole because only the straps were laundered.

With respect to peel cycles, since no procedure was provided, nor any data collected to measure change over

time, we do not believe that peel cycles, “the repeated assembly and disassembly of the hook & loop,” in any

way reflects normal use. The fact that no data was collected/provided prevents any assessment if this

procedure assembled the combination in a manner that would have supported the weight of the vest during

any type of use situation. Thus, it cannot be used as a proxy for normal use. Our understanding is very clear

that an officer reaches up and pulls the c-clamp/strap combination apart quite similar to the shear testing

procedure. Upon each subsequent shear test preformed, the shear strength decreases to a point where the c-

clamp/strap combination is not able to hold the weight of the vest thereby putting the officer at risk of the

vest coming apart. The statement in the Introduction of the Exponent report clearly states that “Exponent has

not verified to what extent, if any, these test conditions reflect anticipated end-use conditions” and we agree

that their testing does not reflect anticipated end-use conditions to any extent.

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X. Appendix Table of Contents:

- Page 13 - Data Table of Vest details – Data Tables 1 & 2

- Page 14 – Photo of Instron Shear Test Set-up at Clemson University

- Page 15 - Photomicrographs of the surface of new and used Breathe-o-Prene®

- Page 16 – Image of Breathe-o-Prene® strap end showing pulled fibers at strap end after shear

testing

- Pages 17-89 - Instron 1125 test results – actual raw data from Clemson University’s Materials

Science & Engineering laboratories.

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Data Table 1 – Vest Details (1)

Data Table 2 – Vest Details (2)

Assigned

ID Vest Description Manufacturer ID Size

Weight

(gms) DOM

Condition

(U/N)

New New Galls Point Blank AII-2 38LL "J" 27-Sep-12 New

Used 1 OFFICER PURPURA Point Blank AXII 46R 9-Mar-15 Used

Used 2 OFFICER ROHNER Point Blank AXII 46L1 8-May-15 Used

Used 3 OFFICER KOONTZ

Point Blank

SP+2LE 44L1 F: 5-Feb-15

B: 11-Feb-15

Used

Used 4 OFFICER TERION Point Blank AXII 50L1 12-May-15 Used

New 1 Elite with Armor Vent Point Blank AXII 44R 20-Nov-17 New


New 3 Point Blank CII-3 44R 19-Nov-17 New

New 4 Point Blank CII-3 44R 19-Nov-17 New


New 6 Elite with Armor Vent Point Blank AXII 44R 1,619 20-Nov-17 New

Green Green Vest:

TRAD-Gen PRO+ 3AFrt Point Blank

H115-4

Style TGH151F

50 2,198 No date New

White White Vest Point Blank BII 56L1 2,275 16-Feb-16 New

2nd Chance Competitive Vest Second Chance Ultima 11A+ 4-Feb-03 New

Assigned

ID

Front

Panel ID

Back

Panel ID

Hook

Design

Front

C-Clamp

Size (inch)

Rear

C-Clamp

Size (inch)

C-Clamp

Stitching Additional Observations

New 120001166988 120001166976 Molded 2x1.5 2x1.5 Straight Extra hook tabs on carrier

Used 1 150000176630 150000176621 Molded 2x1.25 2x1.25 Straight Duct Tape on Straps

Used 2 150000293232 150000293228 Molded 2x1.0 2x1.25 Straight Duct Tape on Straps

Used 3 130000100210 120001461028 Molded 2x1.375 2x1.5 & 1.75 Straight Extra hook tab on carrier, C-Clamp

torn,extremely worn carrier

Used 4 150000296128 150000296090 Molded 2x1.2 2x1.125 Straight Rear Panel ONLY

New 1 170000437704 170000437694 Wire Like 2x1.25 2x1.625 Zig-zag

New 2 170000437703 170000437695 Wire Like 1.875x1.25 2x1.125 Zig-zag




New 6 170000437705 170000437692 Wire Like 1.875x1.25 1.875x1.5 Zig-zag

Green 0501245921 0501245727 Wire Like 2x2 square 2x2 square Straight Extra hook tabs on carrier

White 160000050709 160000050675 Wire Like 2x1.125 2x1.125 Zig-zag

2nd Chance 02030237 - Size 201714 - lot # 715

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Photo of Instron Shear Test Set-up:

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Photomicrographs of Breathe-o-Prene® Surface:

New Breathe-o-Prene®

Used Breathe-o-Prene® (Used Vest #1 BP Strap)

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Photo of Breathe-o-Prene® after Shear testing showing dislodged fibers:

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