ESDU Best Practice Design Guides

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What is ESDU?

• Established in 1940 to capture engineering best practice and publish this knowledge and lessons learned in an easy to use format.

• We have over 20 industry sponsored specialist technical committees and working parties whose members are subject matter experts draw from industry, the research community and academia.

• Our team of engineers write over 100 validated best practice design and analysis guides, technical notes, data sheets and associated software per year at the request of our technical committees.


Engineering Design

• The engineering design function involves individual and team creativity, imagination, and innovation, using:• Basic engineering skills working from first principles

• Tools (reference books, design manuals, standard methods, computer programs etc) which aid with optimization and/or selection among alternatives)

• Experience and what has worked in the past

• Fundamental elements:• Establishing objectives and criteria• Synthesis and analysis• Construction• Testing & evaluation

• This “design” process includes repair, modification, revamp and overhaul design functions.


What are Design Standards?

• Design Standards* : Are uniform requirements, techniques, methods, & data frequently used in product design• Scope

• Proven design and analysis techniques, criteria, & methods• Basic design data that are considered “standard”• Assist with wise selection criteria for parts, materials, & processes• Historically demonstrated practices for cost–effective designs

• Benefits• Tools developed to aid optimization and streamline iteration• Uniform practices to leverage the collective wisdom of the worldwide

Aerospace engineering community• Cost savings through improved first time quality and reduced need for testing

*Taken from the preface of the design manual of a major engineering company


ESDU Standard Design Methods

• The ESDU collection is compendium of uniform requirements, techniques, methods, software & engineering data covering a wide range of engineering disciplines.

• Each ESDU tools is the product of a comprehensive validation process be a wide range of independent subject matter experts drawn from industry, research organizations and academia.

• In addition to access to the ESDU analytical toolbox and software users also get access to our team of experts to give additional help and guidance in their fields of expertise


Engineering Design

• Fundamental elements:• Establishing objectives and criteria• Synthesis, analysis and selection• Construction € €• Testing & evaluation € €

• ESDU is helping engineers…..• Make best use of ‘lessons learned’ not only from their own company but from across

the worldwide aerospace community no matter what the experience level of the individual engineer

• Spend less time working from first principles• Less time modelling via CFD and FEA by providing simple to use empirical methods

but also by providing bench marking tools to allow the validation of models• Spend less time on certification through the use of our validated methods and data• To quickly and accurately solve complicated engineering problems


What does this mean for an engineer?

•Here is a typical engineering problem…

•The engineer must:-

•Design the joint to meet the specified load etc

•Select the material

•Select the bolt

•Calculate the bolt torque to prevent separation

•Calculate the fatigue life

•Consider corrosion

•Etc etc


How long does it take an engineer to solve a problem like this?

• A Chief Engineer within the SAFRAN Group

• “Based on the problem described and a recent example I came upon, far too long!! If the right senior engineer isn’t on the team the problem goes round several loops of analysis while the guys try to work out what to do and finally it ends up with me! The trouble is with project teams we don't encounter each problem too often. Hence the blank faces and much scratching of heads. The outcome of this recent one was several loops of hand calcs, followed by some FEA with bending of bolts and all sorts, before I got involved and I just asked the Engineers to refer to the ESDU method to fix a pre-tension that was between the bolt yield and separation and that minimized the fatigue cycles on the bolt.”


Aerospace Engineering

Key Deliverables

• Best Practice Design Methods• Validated Software• Access to the ESDU Engineering Service

Value to you the customer…

• Increased Design Confidence• Shorter analysis time


Oil Industry example….


Crude Oil Refining Example

• Our research program in collaboration with Total, BP, Shell, Exxon, Chevron and many more indicates….

• Average 100,000 bpd refinery – effects of fouling

• 66,000 barrels per year “lost production” due to additional maintenance• $5 Million per year extra fuel cost• 20,000 tonnes extra CO2 emissions

• Fouling of heat exchangers has enormous implications on the operability and economics of plant.

• We have a proven track record not only of significantly reducing crude oil fouling and in some cases eliminating it completely!


Process Engineering Technology

Key Deliverables

• Best Practice Design Guides• Software• Onsite Seminars/Courses• Participation in a $3million research programme

Value to the customer…

• Increased Design Confidence• Reduced Capital Costs• Lower Development Costs• Improved Plant Efficiency

• Now we are offering these benefits as an outsourced service.


ESDU Validation

• All ESDU work is guided and approved for issue by international committees of independent expert engineers from industry, research and universities.

• The Committee approval and guidance are a key features of the development of the ESDU best practice design and analysis tools.

• It is the input from the ESDU user community that has made ESDU so successful in developing real world tools from independent research.

• ESDU encourages all of it’s customers to participate in their Committees and Working Parties.


A Selection of the Companies Participating on ESDU Technical Committees


ESDU Validation

• Typically when ESDU address an engineering problem raised by one of our technical committees we will produce a collection of Data Items covering:

• Introduction to the problem including a full glossary and explanation of terms• Detailed unbiased examination of existing methods and techniques

including scope, limitations, applicability and accuracy• Detailed guidance on best practice methods• Detailed worked examples and case studies• Presentation of all available validated test data including basis,

applicability and test conditions• In many cases computer programs are also included along with user

manuals

Hence less blank faces and less scratching of heads for the customer

ESDU Best Practice Design Guides

Documents

Transcript of ESDU Best Practice Design Guides