Designsafe studies in Biomedical and Mechanical Engineering By Sebastien A. Daleyden Vincent M....
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Transcript of Designsafe studies in Biomedical and Mechanical Engineering By Sebastien A. Daleyden Vincent M....
Designsafe studies in Biomedical and Mechanical Engineering
By
Sebastien A. Daleyden
Vincent M. Goussen
Advisors:
Dr Paul King & Bruce Main
ICAM: Institut Catholique d’Arts et Metiers
• Advanced school of engineering in France• Last five years• Mechanical engineering• Exchange students for 5 months
Designsafe studies in Biomedical and Mechanical Engineering
• Project proposal
• About safety
• Completed work
• Current work
• Next steps
Project proposal
Safety through design, with the use of Designsafe
• Objective 1:– 1. Benchmarking study comparing Europe and the US in safety
– 2. Evaluating designsafe for its suitability to the European market,
– 3. Translation of designsafe to European language(s)
• Objective 2:– Helping students of BME 273 and ME 243 on safety issues
Importance of safety in design
Unintentional injuries• Every year 30 millions injuries occur due to manufactured
products.– 21 % Design defects– 25 % Inadequate guarding– 44 % Inadequate warning
• Cost of $399 billion a year only in the USA;• Fifth leading cause of death;• Due to interaction between machines and their
environment and the way people live and work
Engineers should more think about the safety of the users...
Sources: National safety council (NSC)
American Society of Safety Engineers (ASSE)
Importance of safety in design
The main reasons why we should more care about safety are:
Time Costs Competition International Influences Capturing knowledge Product liability
Hazard analysis: What is it?
Objectives:
Tool for engineers and safety practitioners to
• identify possible hazards,
• provide an evaluation of the risks,
• prompt alternative design solutions to mitigate or control the risks to an acceptable level.
Hazard analysis: What is it?
Hazard: Potentially dangerous condition, which is triggered by an event, called the cause of the hazard.
Risk: hazard that is associated with a severity and a probability of occurrence.
Hazard analysis: What is it?
Hazard analysis: Identify all possible hazards potentially created by a product, process or application.
Risk assessment: It is the next step after the collection of potential hazards. Risk in this context is the probability and severity of the hazard becoming reality.
European standard: EN 1050, Safety of machinery, Principles for risk assessment
A guidance for decisions during the design of machinery in order to comply with the essential safety and health requirements.
Hazard analysis: What is it?
D o cum e nt R esu lts
V e ri fy E ffec tiv e ne ss
R e d u ce R isks
D e riv e R isk R ating
A sse ss R isks
Id en ti fy H a zards
E s ta b lish A na lys is P aram ete rs
Catastrophic Critical Marginal Negligible
Frequent High High Serious Serious
Probable High High Serious Low
Occasional High Serious Low Low
Remote Serious Low Low Low
Improbable Serious Low Low Low
Severity Category
Probability Level
Hazard analysis flowchart
Example of risk matrix used
An useful engineers’ tool: Designsafe
dse has developed a fast, easy-to-use tool for engineers and safety professionals to incorporate safety through design by:
identifying hazards
prompting engineers to think about hazards which they otherwise might overlook
conducting a risk assessment for identified hazards
reducing risks in a structured method
preventing accidents and reducing liability
Answering to the EN 1050 requirements
Work completed
• Built a background on safety (hazard analysis & risk assessment, CE norms…)
• Learnt the use of Designsafe
• Prepared a course on hazard analysis and on Designsafe for the ME 243
• Assisted to all presentations of BME 273 class that require a DS analysis
• found the main safety websites and safety organizations, a list is available on
our homepage (Benchmarking). • Sent surveys to non US Designsafe demo downloader, and international safety
organizations.
• Meet Bruce Main in Ann Arbor, MI.
Current work
Benchmarking : • Settling designsafe as a reference (weaknesses, strong points)
• Criteria of analysis:Field of activity (medical, food, chemical, semi-conductor, robotic…), compliance, ease of use, cost, communication, languages, effectiveness ...
• Our sources:Internet, feedback of the surveys, study of competitors
Students projects:BME: pancreatic enzyme delivery device
Uterine Retraction DeviceBi-ventricular Assist DeviceCustomization of Teaching Resources
ME: Race car
Moonbuggy
Future work
• Keep on the benchmarking
• Recommendations on where to focus efforts for DS version 2
• DS French version
• Involving in students’ projects
• Preparation of TN Biomedical Engineering
conference