Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Accelerated Life Test"”.
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Accelerated Life Test Modeling Using Median Rank Regression
Accelerated life tests (ALT) are appealing to practitioners seeking to maximize information gleaned from reliability studies, while navigating resource constraints due to time and specimen costs. A popular approach to accelerated life testing is to design test regimes such that experimental …
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Developing Highly Accelerated Life Test (HALT) method to improve product robustness and shorten development cycle
Highly Accelerated Life Testing (HALT) is often used to identify the latent defects for the printed circuit boards (PCBs) during the early stage of the product development process. The inconsistency in executing HALT may not reveal the maximum amount of design weaknesses or intermittent failures, …
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A reliability comparison of recessed-gate and self-aligned gate small signal GaAs MESFETS utilizing an accelerated life test set designed for large scale automated testing
A large scale automated test set was designed and built to address the varied accelerated life test requirements of the GaAs industry. GaAs low-noise/small-signal MESFETs with 1 x 300 micron gate peripheries and 3 different gate structures were subjected to a 1000 hour high temperature storage …
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Accelerated life testing : concepts and models
This thesis deals with the analysis of accelerated life test. First, we provide related concepts and second, we provide detailed properties of three alternative distributions, Gamma, Log-normal and Inverse Gaussian. Various models for failure times are considered which are plausible in this context …
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Design of an electro-mechanical hexapod for accelerated life testing of optical fiber assemblies
… Focal Ratio Degradation (FRD) [3]. Therefore, a life cycle test must be conducted to study fiber behavior and measure FRD as a function of time. This thesis describes the design and design methodology of an electro-mechanical test apparatus for accelerated life testing of optical fiber …
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Scale-up of a high-technology manufacturing startup : improving product reliability through systematic failure analysis and accelerated life testing
… design process and to establish a framework for testing and analyzing product life so that imperative business decisions and design improvements could be made with regards to reliability. A detailed study and implementation of these process improvements to address reliability issues was conducted …
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Wear Characterisation and Usage Level Estimation of Small DC Motors
… the usage level of these motors were identified. Accelerated life test laboratory experiments were conducted to investigate the changes in the characteristics of the wear indicating parameters with motor usage level. The experimental results have identified the reverse current waveforms as the …
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Optimal and Robust Designs of Step-stress Accelerated Life Testing Experiments for Proportional Hazards Models
Accelerated life testing (ALT) is widely used to obtain reliability information about a product within a limited time frame. The Cox s proportional hazards (PH) model is often utilized for reliability prediction. My master thesis research focuses on designing accelerated life testing experiments …