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Accelerated Testing and Validation Methods is a cross-disciplinary guide that describes testing and validation tools and techniques throughout the product development process.
Accelerated life testing is the process of testing a product by subjecting it to conditions stress , strain , temperatures, voltage, vibration rate, pressure etc. In polymers , testing may be done at elevated temperatures to produce a result in a shorter amount of time than it could be produced at ambient temperatures. Many mechanical properties of polymers have an Arrhenius type relationship with respect to time and temperature for example, creep, stress relaxation, and tensile properties. If one conducts short tests at elevated temperatures, that data can be used to extrapolate the behavior of the polymer at room temperature, avoiding the need to do lengthy, and hence expensive tests. For instance, a reliability test on circuits that must last years at use conditions high longevity would need to yield results in a much shorter time.
Topics: Aircraft , Test procedures. Engineers and managers involved with product development are continually challenged to reduce time to market, minimize warranty costs, and increase product quality. This results in less time for testing, which means the need for effective accelerated test procedures has never been greater. Accelerating your testing program sounds great, but how do you begin? This course starts by taking a look at statistical models for reliability testing. It is recommended that you have access to a calculator during this course. By participating in this on-demand course, you'll be able to: Choose the accelerated test method for a given application Analyze accelerated testing results Explain how to accelerate your current test methods Explain how to accelerate your validation program Adjust accelerated test programs for business situations Describe how product development cycles can be reduced from 18 to six months.
An in-situ corrosion sensor was used to obtain electrochemical impedance spectroscopy EIS measurements on coated panels under a variety of accelerated laboratory test conditions as well as ambient exposure at a Florida beach. Three studies are reported. For coatings with minimal edge defects, the two methods gave equivalent results. For coatings with edge defects, the sensor was able to detect the defects provided the surface was wet, as in the salt fog chamber. In contrast, the conventional approach was unable to detect defects unless they were within the confines of the clamp-on cell.
Accelerated Testing and Validation Methods is a cross-disciplinary guide that describes testing and validation tools and techniques throughout the product development process. Alex Porter not only focuses on what information is needed but also on what tools can produce the information in a timely manner. From the information provided, engineers and managers can determine what data is needed from a test and validation program and then how to select the best, most effective methods for obtaining the data. This book integrates testing and validation methods with a business perspective so readers can understand when, where, and how such methods can be economically justified. Testing and validation is about generating key information at the correct time so that sound business and engineering decisions can be made.
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