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Title: Procedure improves line pipe Charpy test interpretation

Abstract

The Charpy V-notch (CVN) impact test is a method of characterizing a line-pipe material`s notch toughness and resistance to fracture growth. Although CVN testing of line pipe material is routine, test results are sometimes misinterpreted because of specimen size and load rate on actual toughness transition behavior. These effects are readily accounted for by a simple mathematical procedure, offered here, which enables extrapolation of the full-scale transition curve from as little as a single subsize specimen test. This procedure is useful when the toughness transition curve is incomplete or nonexistent. Toughness data may be incomplete because the API 5L toughness test establishes minimum performance at a single temperature, which does not reveal the full transition curve. Toughness data may be nonexistent because the first requirements for toughness testing of line pipe appeared in the 16th Edition of API 5LX in 1969, and those requirements remain at the option of the purchaser today.

Authors:
 [1]
  1. Kiefner and Associates Inc., Worthington, OH (United States)
Publication Date:
OSTI Identifier:
465127
Resource Type:
Journal Article
Journal Name:
Oil and Gas Journal
Additional Journal Information:
Journal Volume: 95; Journal Issue: 15; Other Information: PBD: 14 Apr 1997
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 03 NATURAL GAS; 36 MATERIALS SCIENCE; CHARPY TEST; PIPELINES; DATA ANALYSIS; FRACTURE PROPERTIES; CARBON STEELS; LOW ALLOY STEELS; BRITTLE-DUCTILE TRANSITIONS; CALCULATION METHODS

Citation Formats

Rosenfeld, M J. Procedure improves line pipe Charpy test interpretation. United States: N. p., 1997. Web.
Rosenfeld, M J. Procedure improves line pipe Charpy test interpretation. United States.
Rosenfeld, M J. 1997. "Procedure improves line pipe Charpy test interpretation". United States.
@article{osti_465127,
title = {Procedure improves line pipe Charpy test interpretation},
author = {Rosenfeld, M J},
abstractNote = {The Charpy V-notch (CVN) impact test is a method of characterizing a line-pipe material`s notch toughness and resistance to fracture growth. Although CVN testing of line pipe material is routine, test results are sometimes misinterpreted because of specimen size and load rate on actual toughness transition behavior. These effects are readily accounted for by a simple mathematical procedure, offered here, which enables extrapolation of the full-scale transition curve from as little as a single subsize specimen test. This procedure is useful when the toughness transition curve is incomplete or nonexistent. Toughness data may be incomplete because the API 5L toughness test establishes minimum performance at a single temperature, which does not reveal the full transition curve. Toughness data may be nonexistent because the first requirements for toughness testing of line pipe appeared in the 16th Edition of API 5LX in 1969, and those requirements remain at the option of the purchaser today.},
doi = {},
url = {https://www.osti.gov/biblio/465127}, journal = {Oil and Gas Journal},
number = 15,
volume = 95,
place = {United States},
year = {Mon Apr 14 00:00:00 EDT 1997},
month = {Mon Apr 14 00:00:00 EDT 1997}
}