Impact test.

TEAMBalboa García.González Ontiveros.Ramírez Arteaga.

DESTRUCTIVE TEST8º-A

WHAT IS IMPACT? According to ASTM impact test specifically refers to

behavior of metals when subjected to a single resultant force of multi-stress associated with a notch, with high rates of charge an application of and in some cases with high or low temperatures.

IMPACT TEST

TERMINOLOGY Energy of impact.- Is the energy required to break a piece

subjected to a shock load as in an impact test. Tenacity.- Is the total energy absorbed by a material before

reaching the breaking point under impact conditions, due to accumulation of dislocations.

Resilience.- It is called the resiliency of a material deformation energy that can be recovered when a deformed body ceases causing the deformation effect.

IMPACT TEST

TYPES OF IMPACT TEST

Izod type Hammer tests

charpy type Hammer tests

IMPACT TEST

STANDARS

Charpy (ISO 179-1, ASTM D 6110, ASTM E23) Izod (ISO 180, ASTM D 256, ASTM E23) DIN 53435

IMPACT TEST

SPECIMENS

IMPACT TEST

PROCEDURE Obtain standardized test pieces. Wear the appropriate personal protective equipment. Then, without installing any specimen rise and snap the pendulum, to be

released later. The specimen is installed on braces. Calculating the energy invested in the failure of the specimen being tested. Repeat steps (c) and (d) for the other specimens.

IMPACT TEST

TYPES OF FRACTURE

IMPACT TEST

CALCULATIONS Potential energy

EP: mg (ho- hf)

Resilience

IMPACT TEST

APLICATIONSIMPACT TEST

Applications ISO 179-1, ASTM D 6110, ASTM E23 in impact tests are used in: Academic, Aerospace and Suppliers, Industrial, Automotive, Trucks, Railroad, Shipbuilding and Packaging.