Fatigue strength of high-strength steel after shipyard production process of plasma cutting, grinding, and sandblasting

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Fatigue strength of high-strength steel after shipyard production process of plasma cutting, grinding, and sandblasting. / Lillemäe-Avi, Ingrit; Liinalampi, Sami; Lehtimäki, Eero; Remes, Heikki; Lehto, Pauli; Romanoff, Jani; Ehlers, Sören; Niemelä, Ari.

julkaisussa: Welding in the World, Vuosikerta 62, Nro 6, 11.2018, s. 1273-1284.

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Lillemäe-Avi, Ingrit ; Liinalampi, Sami ; Lehtimäki, Eero ; Remes, Heikki ; Lehto, Pauli ; Romanoff, Jani ; Ehlers, Sören ; Niemelä, Ari. / Fatigue strength of high-strength steel after shipyard production process of plasma cutting, grinding, and sandblasting. Julkaisussa: Welding in the World. 2018 ; Vuosikerta 62, Nro 6. Sivut 1273-1284.

Bibtex - Lataa

@article{6b42b86d507f4b6b8f2801b8c77548a1,
title = "Fatigue strength of high-strength steel after shipyard production process of plasma cutting, grinding, and sandblasting",
abstract = "This paper investigates experimentally the fatigue strength of high-strength steel, which has undergone the normal shipyard production process of plasma cutting, grinding, and sandblasting. The study includes steels with the yield strength of 355 and 690 MPa. The tested specimens are of dog-bone shape and represent the large-scale situation of a cruise ship balcony opening corner, loaded in shear or tension. The influence of surface roughness, internal inclusions, hardness, and residual stress on the fatigue strength are studied and discussed. Compared to the design curve as well as to the untreated surfaces, the results show significantly improved fatigue strength under constant amplitude loading at a load ratio of R = 0.1. However, very flat or even rising slope of the S-N curve indicates variations in the material and surface quality as well as in the residual stress. Surprisingly, internal defects even up to 100 μm in size did not decrease the fatigue strength.",
author = "Ingrit Lillem{\"a}e-Avi and Sami Liinalampi and Eero Lehtim{\"a}ki and Heikki Remes and Pauli Lehto and Jani Romanoff and S{\"o}ren Ehlers and Ari Niemel{\"a}",
year = "2018",
month = "11",
doi = "10.1007/s40194-018-0638-y",
language = "English",
volume = "62",
pages = "1273--1284",
journal = "Welding in the World",
issn = "0043-2288",
number = "6",

}

RIS - Lataa

TY - JOUR

T1 - Fatigue strength of high-strength steel after shipyard production process of plasma cutting, grinding, and sandblasting

AU - Lillemäe-Avi, Ingrit

AU - Liinalampi, Sami

AU - Lehtimäki, Eero

AU - Remes, Heikki

AU - Lehto, Pauli

AU - Romanoff, Jani

AU - Ehlers, Sören

AU - Niemelä, Ari

PY - 2018/11

Y1 - 2018/11

N2 - This paper investigates experimentally the fatigue strength of high-strength steel, which has undergone the normal shipyard production process of plasma cutting, grinding, and sandblasting. The study includes steels with the yield strength of 355 and 690 MPa. The tested specimens are of dog-bone shape and represent the large-scale situation of a cruise ship balcony opening corner, loaded in shear or tension. The influence of surface roughness, internal inclusions, hardness, and residual stress on the fatigue strength are studied and discussed. Compared to the design curve as well as to the untreated surfaces, the results show significantly improved fatigue strength under constant amplitude loading at a load ratio of R = 0.1. However, very flat or even rising slope of the S-N curve indicates variations in the material and surface quality as well as in the residual stress. Surprisingly, internal defects even up to 100 μm in size did not decrease the fatigue strength.

AB - This paper investigates experimentally the fatigue strength of high-strength steel, which has undergone the normal shipyard production process of plasma cutting, grinding, and sandblasting. The study includes steels with the yield strength of 355 and 690 MPa. The tested specimens are of dog-bone shape and represent the large-scale situation of a cruise ship balcony opening corner, loaded in shear or tension. The influence of surface roughness, internal inclusions, hardness, and residual stress on the fatigue strength are studied and discussed. Compared to the design curve as well as to the untreated surfaces, the results show significantly improved fatigue strength under constant amplitude loading at a load ratio of R = 0.1. However, very flat or even rising slope of the S-N curve indicates variations in the material and surface quality as well as in the residual stress. Surprisingly, internal defects even up to 100 μm in size did not decrease the fatigue strength.

U2 - 10.1007/s40194-018-0638-y

DO - 10.1007/s40194-018-0638-y

M3 - Article

VL - 62

SP - 1273

EP - 1284

JO - Welding in the World

JF - Welding in the World

SN - 0043-2288

IS - 6

ER -

ID: 31331879