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Reliability Analysis Center

IIT Research Institute 201 Mill Street Rome, New York 13440-6916 1 - 888 - RAC - USER

(1 - 888 - 722 - 8737)

Reliability Data Collection and Analysis

http://rac.iitri.org

Description:

eliability data collection is the process of identifying and acquiring data to support reliability analysis at the part, component, product and system levels. The analysis of the data involves (1) converting the collected data to common measures and formats and (2) performing statistical analyses to identify trends; develop models and tools; and create reports, ollection and analysis of data allows the identification of failure trends so that corrective actions can be identified, implemented and verified to improve product/system reliability. The use of field/test data for analysis requires qualification (data integrity, without bias) and summarization (relevant results) into a useful format. Data analysis establishes correlations between reliability, design, manufacturing and operational variables. Failure data supports reliability modeling, allocations and predictions. Failure mode, mechanism and repair data provides a basis for performing fault tree and failure modes, effects and criticality analyses. The collection of accurate reliability data is essential to ensure that problem areas are addressed and to support decisions having a positive impact on reliability. Effective data collection and analysis reduces costs associated with inefficient or inaccurate identification of problems. Applied early, it provides support for reliability requirements definition and design decisions. When applied later in the life cycle, it can support testing and maintenance decisions and facilitate problem detection. Effective data collection begins with the identification of needs. Whether the customer is

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handbooks and documents that can support the product throughout its life cycle. Experienced engineers and analysts, using appropriate techniques, evaluate the collected data to derive relevant information addressing any issue related to understanding the reliability of military and commercial products and systems.

How It Can B e n e f i t Yo u :

a designer, a reliability practitioner, or a manager, it is critical that the appropriate data is collected to support the objectives of the analysis. In order to adequately address a reliability problem, sufficient data must be available to support a thorough analysis. When appropriate, new data sources may need to be identified to supplement the data currently available in order to meet a specific analysis requirement. A well thought out and effectively implemented data program can benefit the user by helping to determine reliability objectives that support: estimation of warranty & support costs evaluation of trade-offs for design alternatives allocation of product/system reliability to lower levels of assembly identification of potential failure causes estimation of sparing needs Appropriate analyses adds value to the data collected to serve specific reliability needs in a cost-effective manner.

RAC is a DoD Information Analysis Center sponsored by the Defense Technical Information Center and operated by IIT Research Institute

Reliability Data Collection and Analysis

R A C C a pa b i l i t y :

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AC's experience in collecting, analyzing and storing reliability data has resulted in extensive databases that contain information on electronic and mechanical parts, products and systems. This provides RAC with the unique capability to provide valuable insight into potential reliability improvement areas for both fielded products/systems and those still under development. The RAC maintains databases covering: failure rates failure modes/mechanisms ESD susceptibility part parameter drift system reliability (including COTS equipment)

RAC has the data, and the requisite expertise, to provide reliability support over the entire product/system life cycle. RAC can assess the impact of changes to commercial and military standards on product/system reliability, evaluate trade-offs and identify potential risks. As a product/system proceeds through development, RAC can define and verify reliability requirements and develop reliability procedures. During production, RAC technical personnel can be used to monitor tests, analyze failures to determine root cause, and define and implement failure reporting and corrective action procedures. RAC also has the experience and expertise to perform reliability-based decision-oriented analysis that supports issues such as: Affordability, by considering the impact of reliability on product/system operations and maintenance costs. Life extension assessment, by evaluating the reliability impact of extended operation on materials such as gaskets, seals, adhesives etc. Variability reduction, through training and by recommending processes to minimize variability. Root cause failure analysis, by identifying the mechanisms that cause failures.

RAC engineers have developed, modified and enhanced analytical tools and methods covering automotive, appliance, other commercial vendor and military industries. Analysis performed by RAC has included traditional problems such as requirements definition, generation of product specifications, and allocation of spare hardware. RAC engineers can assist in the evaluation of competing design approaches, the prediction of warranty repairs, and the development of a parts control program. Reliability Analysis Center (RAC) [email protected] (e-mail) 1-888-RAC-USER (phone) or 315-337-0900 (phone) 315-337-9932 (fax) http://rac.iitri.org

C o n ta c t :

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Reliability Analysis Center

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