Turnbull, A; Fry, A T (2008) Residual stress determination in laser-peened high strength low alloy steel - comparison of methodologies and reproducibility. NPL Report. MAT 27

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Abstract

The residual stress in laser-peened 300M steel has been determined using X-ray diffraction (XRD) by two different organisations in order to assess the degree of reproducibility. In addition, complementary hole-drilling has been undertaken to allow comparison of near-surface residual stress using the two different techniques. Good agreement between the two laboratories was obtained in relation to the circumferential stress and between results determined by XRD and hole-drilling. For axial stresses, the hole-drilling gave smaller stresses in absolute terms and the agreement between the XRD-determined residual stress data was less ideal though there was no systematic difference.

Item Type:	Report/Guide (NPL Report)
NPL Report No.:	MAT 27
Keywords:	Residual stress, steel, laser peening, X-ray diffraction, hole-drilling
Subjects:	Advanced Materials Advanced Materials > Metals and Alloys
Last Modified:	02 Feb 2018 13:15
URI:	http://eprintspublications.npl.co.uk/id/eprint/4309

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