Fatigue crack growth equations for TC-128B tank car steel

Feiger, James H; McKeighan, Peter C; Cardinal, Joseph W.

i

Fatigue crack growth equations for TC-128B tank car steel

2006-10-01
By Feiger, James H ; McKeighan, Peter C ; Cardinal, Joseph W.

File Language:

English

Details

Creators:

Feiger, James H ; McKeighan, Peter C ; Cardinal, Joseph W.
Corporate Creators:

Southwest Research Institute ; John A. Volpe National Transportation Systems Center (U.S.)
Subject/TRT Terms:
Publication/ Report Number:

SwRI project No. 18.12240.01.006
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

United States. Department of Transportation. Federal Railroad Administration
Abstract:

In an effort to develop relevant data for use in applying damage tolerance analysis concepts to railroad tank cars, the fatigue crack growth (FCG) behavior of TC-128B tank car steel was investigated by SwRI in a previous test program conducted for the Volpe Center 1. Fatigue crack growth rate data (da/dN vs ΔK) for TC-128B tank car steel were obtained in Ref. 1 for two lots of TC-128B steel donated by two tank car manufacturers. In order for these data to be available for use in fatigue crack growth analyses of railroad tank cars, they must be mathematically characterized in terms of crack growth equations or laws. Therefore, the objective of the work reported herein was to obtain empirical constants for crack growth equations that are commonly employed in damage tolerance analyses. These equations are the Paris equation, the Walker equation and the NASGRO® equation. In the following, a brief review of the previous fatigue crack growth rate test program is first presented, followed by a summary of the crack growth equations that were used to fit the empirical data. The curve fits to the data for each equation are then presented along with recommendations for their use.
Format:

PDF
Funding:

DDTS.060183.00.801
Download URL:

https://rosap.ntl.bts.gov/view/dot/8998/dot_8998_DS1.pdf
File Type:

[PDF - 274.14 KB]
Collection(s):

Volpe Center ; Federal Railroad Administration
Main Document Checksum:

urn:sha-512:0481efebe9d045946c7ffc60dbdcc12a21532c49258de4cdff1144d5d5ef523ee18a14480d676c9f74a819d6255be75f35153236048ad214da3e6fc306943cb7

File Language:

English

ON THIS PAGE

Details

Found an issue?

Send us an email at:

publishinghd@cdc.gov

ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.