Durability Test Suite Optimization Based on Physics of Failure AVL LIST GmbH

Format:

Conference/Event

Author/Creator:

Velten, Velten, author.

Contributor:

Bauman, Shawn

Hammer, Michael

Holland, Billy G.

McKinley, Thomas

Wohlfart, Johan

Conference Name:

WCX World Congress Experience (2018-04-10 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2018

Summary:

AbstractDynamometer (dyno) durability testing plays a significant role in reliability and durability assessment of commercial engines. Frequently, durability test procedures are based on warranty history and corresponding component failure modes. Evolution of engine designs, operating conditions, electronic control features, and diagnostic limits have created challenges to historical-based testing approaches.A physics-based methodology, known as Load Matrix, is described to counteract these challenges. The technique, developed by AVL, is based on damage factor models for subsystem and component failure modes (e.g. fatigue, wear, degradation, deposits) and knowledge of customer duty cycles. By correlating dyno test to field conditions in quantifiable terms, such as customer equivalent miles, more effective and efficient durability test suites and test procedures can be utilized. To this end, application of Load Matrix to a heavy-duty diesel engine is presented. When comparing to an exclusively historically based test suite, the Load Matrix approach provides a 20% reduction in dyno test hours while increasing the number of failure modes covered to the engine durability target by nearly a factor of two

Notes:

Vendor supplied data

Publisher Number:

2018-01-0792

Access Restriction:

Restricted for use by site license