New Methods for Fracture Detection of Automotive Steels

Noder, Jacqueline; Samadian, Pedram; Dykeman, James; Abedini, Armin; Zhumagulov, Amir; Worswick, Michael J.; Butcher, Cliff

doi:10.1007/978-3-030-75381-8_55

Cited by 1 publication

(2 citation statements)

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“…To independently evaluate the fracture strain correlation in Equation ( 9), a separate dataset comprising 26 different AHSS test conditions ranging from 590 MPa to 1500 MPa was compiled from the literature [11,14,17,18,[25][26][27]. It is important to note that this diverse range of AHSS includes 13 steels with strengths lower than 780 MPa, which was the lowest strength level used in the calibration of Equation (9).…”

Section: Evaluation Of Bend Performance With Tensile Propertiesmentioning

confidence: 99%

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Characterization and Prediction of Plane Strain Bendability in Advanced High-Strength Steels

Cheong,

Noder,

Zhumagulov

et al. 2023

Metals

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The rapid development of new classes of automotive steels such as the 3rd generation of advanced high-strength steels has created the need for the efficient characterization of their mechanical properties in loading scenarios other than uniaxial tension. The VDA 238-100 tight radius bend test has gained widespread acceptance in recent years for characterizing performance in plane strain bending, but there is uncertainty surrounding the use of the bend angle and its interrelation with the test parameters. The objective of the present study is to investigate the intertwined effects of the sheet thickness, bend radius, and tensile properties upon the bendability of seven advanced high-strength steels in different thicknesses for a total of 83 conditions. Practical correlations are developed to predict the bend angle and plane strain fracture strain as functions of the bending conditions and tensile mechanical properties. An extensive dataset comprising 26 additional advanced high-strength steel test cases was compiled from the literature to evaluate the proposed correlation for the plane strain fracture strain.

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