IEEE Transactions on Components and Packaging Technologies, Jun 1, 2006
Abstract A reliability capability assessment process can assist OEMs and system integrators in as... more Abstract A reliability capability assessment process can assist OEMs and system integrators in assessing prospective suppliers for their ability to design and manufacture reliable products before they are delivered for use, and on an ongoing basis, help a company in ...
Quality and Reliability Engineering International, Jul 1, 1999
Reliability assessment has been discussed extensively in the commercial aerospace and military av... more Reliability assessment has been discussed extensively in the commercial aerospace and military avionics industries where, unlike most other industries, it is necessary to have formal, quantitative estimates of the reliability of products prior to the start of production. Until recently, handbook databases and equations were used almost universally for electronic equipment reliability prediction based on failure rates; however, handbook usage is declining and new approaches are needed. Representatives of a large segment of the aerospace industry have worked together to develop an alternative. The Reliability Assessment Program (RAP) is credible, easy to use and holds promise for wide acceptance. RAP does not prescribe a uniform method for all users; instead, it is flexible, encouraging the user to take into account all the unique design, manufacturing and use factors critical to the reliability of the product being assessed. A RAP document is being developed as an industry consensus standard for aerospace electronic equipment manufacturers to use in documenting their reliability assessment processes, including data sources, calculation and analysis methods, results reporting and continuous improvement of the assessment process by comparing assessment results with achieved in-service reliability. RAP is described in this paper, along with current activities to implement it and gain acceptance across the industry.
Design for Reliability (DfR) is focused on demand versus capability modeling, where demand is the... more Design for Reliability (DfR) is focused on demand versus capability modeling, where demand is the functionality, environmental conditions and timing conditions that the customer needs from the system. Capability is the "asdesigned" robustness of the system along with the design requirements specified for the system performance. The goal of the method described in this paper is to apply DfR guidance to use test data to measure system reliability. Test data is used to demonstrate improved system capability to satisfy customer demands. Applying DfR activities as a guide, allows engineers to identify and characterize reliability drivers and develop mitigation plans to increase system reliability and provide a quantified measure of reliability growth. Reliability drivers are prioritized to reduce the scope and cost of a reliability program and ensure appropriate attention is placed on high risk capability concerns.
This paper describes the advantages of accelerated stress testing and addresses the value of acce... more This paper describes the advantages of accelerated stress testing and addresses the value of accelerated stressing to find probabilistic software failure modes. The value has been widely reported in discovery of traditional hardware-related failure modes, but has not been widely accepted as valuable in finding software errors. This paper provides a business case study in accelerated stressing to find both the traditional hardware failure mechanisms and the elusive probabilistic software failures. This case is presented with a cost benefit analysis including warranty cost avoidance. This business case quantifies the value of accelerated stress testing by demonstrating that in the development phase, accelerated stress testing finds software errors that would have been found later in the product's life cycle after the product is launched and manufactured in high volume, which would have made a detrimental impact to the company's bottom-line.
This chapter contains sections titled: Human Factors Engineering A Design Engineer's Interest... more This chapter contains sections titled: Human Factors Engineering A Design Engineer's Interest in Human Factors Human-Centered Design Human Factors Analysis Process Human Factors and Risk Human Error Design for Error Tolerance Checklists Testing to Validate Human Factors in Design References ]]>
This chapter contains sections titled: Introduction Reliability Tools Test Data Analysis Summary ... more This chapter contains sections titled: Introduction Reliability Tools Test Data Analysis Summary References ]]>
This chapter contains sections titled: Overview Designing for Extreme Environments Designing for ... more This chapter contains sections titled: Overview Designing for Extreme Environments Designing for Cold Designing for Heat References ]]>
This chapter contains sections titled: Introduction Modules and Components Politics of Reuse Desi... more This chapter contains sections titled: Introduction Modules and Components Politics of Reuse Design Principles Design Constraints That Make Systems Trustworthy Conclusions References and Notes ]]>
Presents a collection of slides covering the following topics: software development; software fai... more Presents a collection of slides covering the following topics: software development; software failure; software quality; and safety-critical software.
IEEE Transactions on Components and Packaging Technologies, Jun 1, 2006
Abstract A reliability capability assessment process can assist OEMs and system integrators in as... more Abstract A reliability capability assessment process can assist OEMs and system integrators in assessing prospective suppliers for their ability to design and manufacture reliable products before they are delivered for use, and on an ongoing basis, help a company in ...
Quality and Reliability Engineering International, Jul 1, 1999
Reliability assessment has been discussed extensively in the commercial aerospace and military av... more Reliability assessment has been discussed extensively in the commercial aerospace and military avionics industries where, unlike most other industries, it is necessary to have formal, quantitative estimates of the reliability of products prior to the start of production. Until recently, handbook databases and equations were used almost universally for electronic equipment reliability prediction based on failure rates; however, handbook usage is declining and new approaches are needed. Representatives of a large segment of the aerospace industry have worked together to develop an alternative. The Reliability Assessment Program (RAP) is credible, easy to use and holds promise for wide acceptance. RAP does not prescribe a uniform method for all users; instead, it is flexible, encouraging the user to take into account all the unique design, manufacturing and use factors critical to the reliability of the product being assessed. A RAP document is being developed as an industry consensus standard for aerospace electronic equipment manufacturers to use in documenting their reliability assessment processes, including data sources, calculation and analysis methods, results reporting and continuous improvement of the assessment process by comparing assessment results with achieved in-service reliability. RAP is described in this paper, along with current activities to implement it and gain acceptance across the industry.
Design for Reliability (DfR) is focused on demand versus capability modeling, where demand is the... more Design for Reliability (DfR) is focused on demand versus capability modeling, where demand is the functionality, environmental conditions and timing conditions that the customer needs from the system. Capability is the "asdesigned" robustness of the system along with the design requirements specified for the system performance. The goal of the method described in this paper is to apply DfR guidance to use test data to measure system reliability. Test data is used to demonstrate improved system capability to satisfy customer demands. Applying DfR activities as a guide, allows engineers to identify and characterize reliability drivers and develop mitigation plans to increase system reliability and provide a quantified measure of reliability growth. Reliability drivers are prioritized to reduce the scope and cost of a reliability program and ensure appropriate attention is placed on high risk capability concerns.
This paper describes the advantages of accelerated stress testing and addresses the value of acce... more This paper describes the advantages of accelerated stress testing and addresses the value of accelerated stressing to find probabilistic software failure modes. The value has been widely reported in discovery of traditional hardware-related failure modes, but has not been widely accepted as valuable in finding software errors. This paper provides a business case study in accelerated stressing to find both the traditional hardware failure mechanisms and the elusive probabilistic software failures. This case is presented with a cost benefit analysis including warranty cost avoidance. This business case quantifies the value of accelerated stress testing by demonstrating that in the development phase, accelerated stress testing finds software errors that would have been found later in the product's life cycle after the product is launched and manufactured in high volume, which would have made a detrimental impact to the company's bottom-line.
This chapter contains sections titled: Human Factors Engineering A Design Engineer's Interest... more This chapter contains sections titled: Human Factors Engineering A Design Engineer's Interest in Human Factors Human-Centered Design Human Factors Analysis Process Human Factors and Risk Human Error Design for Error Tolerance Checklists Testing to Validate Human Factors in Design References ]]>
This chapter contains sections titled: Introduction Reliability Tools Test Data Analysis Summary ... more This chapter contains sections titled: Introduction Reliability Tools Test Data Analysis Summary References ]]>
This chapter contains sections titled: Overview Designing for Extreme Environments Designing for ... more This chapter contains sections titled: Overview Designing for Extreme Environments Designing for Cold Designing for Heat References ]]>
This chapter contains sections titled: Introduction Modules and Components Politics of Reuse Desi... more This chapter contains sections titled: Introduction Modules and Components Politics of Reuse Design Principles Design Constraints That Make Systems Trustworthy Conclusions References and Notes ]]>
Presents a collection of slides covering the following topics: software development; software fai... more Presents a collection of slides covering the following topics: software development; software failure; software quality; and safety-critical software.
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