Power Cycle Test Bench for Accelerated Life Testing for Reliability Assessment of SiC-MOSFET in Extreme Offshore Environment

2019 ◽  
Author(s):  
Amin Rahnama Sadat
Keyword(s):  
Test Bench ◽  
Reliability Assessment ◽  
Accelerated Life Testing ◽  
Life Testing ◽  
Power Cycle ◽  
Accelerated Life

A Sequential Accelerated Life Testing Framework for System Reliability Assessment With Untestable Components

2018 ◽  
Vol 140 (10) ◽  
Author(s):  
Zhen Hu ◽  
Zissimos P. Mourelatos
Keyword(s):  
System Reliability ◽  
Reliability Assessment ◽  
Reliability Evaluation ◽  
Accelerated Life Testing ◽  
System Level ◽  
Life Testing ◽  
Component Level ◽  
Accelerated Life ◽  
Design Cycle ◽  
Framework System

Testing of components at higher-than-nominal stress level provides an effective way of reducing the required testing effort for system reliability assessment. Due to various reasons, not all components are directly testable in practice. The missing information of untestable components poses significant challenges to the accurate evaluation of system reliability. This paper proposes a sequential accelerated life testing (SALT) design framework for system reliability assessment of systems with untestable components. In the proposed framework, system-level tests are employed in conjunction with component-level tests to effectively reduce the uncertainty in the system reliability evaluation. To minimize the number of system-level tests, which are much more expensive than the component-level tests, the accelerated life testing (ALT) design is performed sequentially. In each design cycle, testing resources are allocated to component-level or system-level tests according to the uncertainty analysis from system reliability evaluation. The component-level or system-level testing information obtained from the optimized testing plans is then aggregated to obtain the overall system reliability estimate using Bayesian methods. The aggregation of component-level and system-level testing information allows for an effective uncertainty reduction in the system reliability evaluation. Results of two numerical examples demonstrate the effectiveness of the proposed method.

scholarly journals Reliability Assessment of a Packaging Automatic Machine by Accelerated Life Testing Approach

2017 ◽  
Vol 11 ◽  
pp. 2178-2186 ◽  
Author(s):  
Alberto Regattieri ◽  
Francesco Piana ◽  
Mauro Gamberi ◽  
Francesco Gabriele Galizia ◽  
Andrea Casto
Keyword(s):  
Reliability Assessment ◽  
Automatic Machine ◽  
Accelerated Life Testing ◽  
Life Testing ◽  
Accelerated Life ◽  
Testing Approach

Reliability Assessment of Passives for 300C using HALT

2010 ◽  
Vol 2010 (HITEC) ◽  
pp. 000199-000206
Author(s):  
David Shaddock ◽  
Vinayak Tilak ◽  
Tan Zhang ◽  
Rui Zhang ◽  
R. Wayne Johnson
Keyword(s):  
Ambient Temperature ◽  
Reliability Assessment ◽  
Accelerated Life Testing ◽  
Life Testing ◽  
Passive Components ◽  
Test Methodology ◽  
Combined Stresses ◽  
Accelerated Life

Highly accelerated life testing (HALT) is used to quickly assess the reliability of passive components for geothermal applications operating at 300°C ambient temperature. The HALT methodology uses combined stresses to accelerate the failure of capacitors and resistors. This paper describes the test methodology, special fixture designed, and results on capacitors and resistors. Life models for the components are presented. A process to modify component terminations is presented to make them appropriate for 300°C.

Sequential Accelerated Life Testing Design for System Reliability Analysis With Untestable Components

2018 ◽  
Author(s):  
Zhen Hu ◽  
Zissimos P. Mourelatos
Keyword(s):  
System Reliability ◽  
Reliability Assessment ◽  
Reliability Evaluation ◽  
Accelerated Life Testing ◽  
System Level ◽  
Life Testing ◽  
Component Level ◽  
Accelerated Life ◽  
Framework System ◽  
Testing Design

Testing of components at higher-than-nominal stress level provides an effective way of reducing the required testing effort for system reliability assessment. Due to various reasons, not all components are directly testable in practice. The missing information of untestable components poses significant challenges to the accurate evaluation of system reliability. This paper proposes a sequential accelerated life testing (SALT) design framework for system reliability assessment of systems with untestable components. In the proposed framework, system-level tests are employed in conjunction with component-level tests to effectively reduce the uncertainty in the system reliability evaluation. To minimize the number of system-level tests which are much more expensive than the component-level tests, the accelerated life testing design is performed sequentially. In each design cycle, testing resources are allocated to component-level or system-level tests according to the uncertainty analysis from system reliability evaluation. The component-level or system-level testing information obtained from the optimized testing plans are then aggregated to obtain the overall system reliability estimate using Bayesian methods. The aggregation of component-level and system-level testing information allows for an effective uncertainty reduction in the system reliability evaluation. Results of two numerical examples demonstrate the effectiveness of the proposed method.

Reliability Assessment of Passives for 300°C and 350°C

2011 ◽  
Vol 2011 (HITEN) ◽  
pp. 000001-000006
Author(s):  
David Shaddock ◽  
Alexey Vert ◽  
Tan Zhang ◽  
Rui Zhang ◽  
R. Wayne Johnson
Keyword(s):  
Reliability Assessment ◽  
Accelerated Life Testing ◽  
Life Testing ◽  
Passive Components ◽  
Ambient Temperatures ◽  
Test Methodology ◽  
Combined Stresses ◽  
Accelerated Life

Highly accelerated life testing (HALT) is used to quickly assess the reliability of passive components for geothermal applications operating at 300°C ambient temperatures. The HALT methodology uses combined stresses to accelerate the failure of capacitors and resistors. This paper describes the test methodology and results on capacitors and resistors at 300°C and 350°C. Life models for the components are presented.

ACCELERATED LIFE TESTING OF COMPONENTS OF NUCLEAR RESEARCH REACTORS

2016 ◽  
Author(s):  
Vanderley Vasconcelos ◽  
WELLINGTON SOARES ◽  
Antonio Carlos Lopes da Costa ◽  
Raíssa Oliveira Marques
Keyword(s):  
Nuclear Research ◽  
Accelerated Life Testing ◽  
Life Testing ◽  
Research Reactors ◽  
Accelerated Life
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