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ASTM E399 PDF
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Standard Test Method for Linear-Elastic Plane-Strain Fracture Toughness of Metallic Materials
| Published by | Publication Date | Number of Pages |
| ASTM | 06/01/2022 | 39 |
ASTM E399 – Standard Test Method forLinear-Elastic Plane-Strain Fracture Toughness of MetallicMaterials
1.1”This test method covers the determination of fracture toughness (KIc and optionally KIsi) of metallic materials under predominantly linear-elastic, plane-strain conditions using fatigue precracked specimens having a thickness of 1.6 mm (0.063 in.) or greater2 subjected to slowly, or in special (elective) cases rapidly, increasing crack-displacement force. Details of test apparatus, specimen configuration, and experimental procedure are given in the annexes. Two procedures are outlined for using the experimental data to calculate fracture toughness values:
1.1.1”The KIc test procedure is described in the main body of this test standard and is a mandatory part of the testing and results reporting procedure for this test method. The KIc test procedure is based on crack growth of up to 2”’% percent of the specimen width. This can lead to a specimen size dependent rising fracture toughness resistance curve, with larger specimens producing higher fracture toughness results.
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