Requirements of quantitative NDE in developing fracture control plans

Conference · Thu Nov 01 04:00:00 EST 1984

OSTI ID:6355226

Streit, R D

The goal of quantitative nondestructive evaluation, QNDE, is to quantify the results of an inspection: e.g., flaw size, porosity, inclusions, etc., such that results can be used in an engineering design evaluation. In this respect, it is important for the NDE community to closely interface with the design and materials engineers to establish the important quantifiable factors which can be readily used. One specific interaction is that of the fracture mechanics analysis and QNDE flaw size characterization. In this paper, we address the needs of the flaw size characterization in fracture control planning. Three factors; i.e., flaw size, flaw shape, and the probability of detection are discussed relative to linear-elastic fracture mechanics (LEFM). This paper is divided into three section; basics of LEFM, concepts of fracture control planning, and the requirements for flaw characterization. Special topics in fracture mechanics, such as elastic-plastic fracture or fracture of brittle materials (e.g., Weibul statistics) are not dealt with specifically, however, the same variables - flaw size, shape and probability of detection are equally important under these constraints as with LEFM.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6355226
• Report Number(s): UCRL-90716; CONF-840738-12; ON: DE85003147
• Country of Publication: United States
• Language: English

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COMMINUTION
CONTROL
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FRACTURING
GRAPHS
MATERIALS
MATERIALS TESTING
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
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