A New Approach of Accelerated Life Testing for Metallic Catalytic Converters

Nagel, Thomas; Krämer, Jan; Presti, Manuel; Schatz, Axel; Breuer, Juergen; Scaparo, John A.; Montalbano, Andrew; Salzman, Ron A.

doi:10.4271/2004-01-0595

Cited by 9 publications

(2 citation statements)

References 6 publications

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“…The experimental validation has been carried out on a component test bench, as already shown in [12], combining an electro-dynamic shaker, that delivers the required mechanical load, and a power modulated burner, which exposes the catalyst to the required temperature transients and the maximum temperatures. In such a system we try to mimic the conditions that will be seen by a PTC during a manifold crack test on an engine test bench, for example.…”

Section: Experimental Validation: Ptc Durability Demonstrationmentioning

confidence: 99%

Pre-Turbocharger-Catalyst - Catalytic Performances on an Euro V Type Diesel Engine and Robust Design Development

Konieczny

Müller

Cherington

et al. 2008

SAE Technical Paper Series

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The appearance of this ISSN code at the bottom of this page indicates SAE´s consent that copies of the paper may be made for personal or internal use of specific clients. This consent is given on the condition, however, that the copier pay $ 7.00 per article copy fee through the Copyright Clearance Center, Inc. Operations Center, 222 Rosewood Drive, Danvers, MA 01923 for copying beyond that permitted by Sections 107 or 108 of the U.S. Copyright Law. This consent does not extend to other kinds of copying such as copying for general distribution, for advertising or promotional purposes, for creating new collective works, or for resale. SAE routinely stocks printed papers for a period of three years following date of publication. Direct your orders to SAE Customer Sales and Satisfaction Department. Quantity reprint rates can be optained from the Customer Sales and Satisfaction Department. To request permission to reprint a technical paper or permission to use cpyrighted SAE publications in other works, contact the SAE Publication Group. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher.

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Section: Experimental Validation: Ptc Durability Demonstrationmentioning

confidence: 99%

Pre-Turbocharger-Catalyst - Catalytic Performances on an Euro V Type Diesel Engine and Robust Design Development

Konieczny

Müller

Cherington

et al. 2008

SAE Technical Paper Series

Self Cite

View full text Add to dashboard Cite

show abstract

“…Accelerated lifetime testing strategy was used to study the performance of different substrate designs under defined boundary conditions. The accelerated testing philosophy is very helpful to determine product life for one specific failure mode under extreme mechanical and thermal loads during the development phase [ 1]. The test is very useful for design discrimination, e.g.…”

Section: Robustness Testingmentioning

confidence: 99%

Development of Advanced Metallic Substrate Design for Close Coupled Converter Application

Müller-Haas¹,

Rice²,

Dean

et al. 2007

SAE Technical Paper Series

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The implementations of the Tier 2 and LEVII emission levels require fast catalyst light-off and fast closed loop control through high-speed engine management. The paper describes the development of innovative catalyst designs. During the development thermal and mechanical boundary conditions were collected and component tests conducted on test rigs to identify the emission and durability performance. The products were evaluated on a Super Imposed Test Setup (SIT) where thermal and mechanical loads are applied to the test piece simultanously and results are compared to accelerated vehicle power train endurance runs. The newly developed light-off catalyst with Perforated Foil Technology (PE) showed superior emission light-off characteristic and robustness.

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Highly accelerated life testing (HALT): A review from a statistical perspective

Collins,

Huzurbazar,

Warr

2024

WIREs Computational Stats

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Despite its use in one form or another for at least four decades, HALT and related techniques [e.g., highly accelerated‐stress screening (HASS) and stress audits (HASA)] are not well understood within the statistical community and remain controversial. This largely reflects a conflict in motivation between engineers, testing under harsh conditions to discover and eliminate failure modes, and statisticians, taking a more cautious approach to develop quantitative estimates of parameters such as mean time between failures (MTBF). This review article will clarify HALT concepts and methods and explain where it fits within the universe of methods that involve the application of accelerating factors to compress the time required to evaluate or enhance product reliability. A major distinction is between methods such as HALT, a high‐stress test‐analyze‐fix‐test iterative process directed at improving reliability by discovering and fixing weak points in a design, and quantitative accelerated life testing (QALT), whose goal is the estimation of product life for a fixed design. We discuss methods such as physics of failure that offer some hope of bridging the gap between the qualitative nature of HALT, and purely quantitative statistical methods. We present a variety of engineering applications of HALT including metal fatigue, piping and pressure vessels, structural damage, radiation damage, and rotating machinery. We also discuss potential synergies between HALT and QALT, such as rapid identification, through HALT, of failure modes requiring quantitative analysis. For further study, extensive references to the applicable literature are provided as well as an appendix that describes related methods.This article is categorized under: Statistical and Graphical Methods of Data Analysis > Reliability, Survivability, and Quality Control

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A New Approach of Accelerated Life Testing for Metallic Catalytic Converters

Cited by 9 publications

References 6 publications

Pre-Turbocharger-Catalyst - Catalytic Performances on an Euro V Type Diesel Engine and Robust Design Development

Pre-Turbocharger-Catalyst - Catalytic Performances on an Euro V Type Diesel Engine and Robust Design Development

Development of Advanced Metallic Substrate Design for Close Coupled Converter Application

Highly accelerated life testing (HALT): A review from a statistical perspective

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