A review of multiaxial fatigue of weldments: Experimental results, design code and critical plane approaches

Mika Bäckström, Gary Marquis

Research output: Contribution to journal › Article › Scientific › peer-review

57 Citations (Scopus)

Abstract

A survey of biaxial (bending or tension and torsion) constant amplitude fatigue of welded connections is presented. Re‐analysis of 233 experimental results from eight different studies has been performed based on hot spot stresses and three potential damage parameters: maximum principal stress range; maximum shear stress range; and a modified critical plane model for welds. Of the three methods, the critical plane model was most successful in resolving the data to a single S–N line. The design curve for all toe failures based on the critical plane model was FAT 97 with a slope of 3. By excluding butt welds and including only fillet welds that failed at the weld toe, the design curve was increased to FAT 114 with a slope of 3. However, observed scatter was 70–100% larger than that observed in uniaxial loaded specimens analysed using the hot spot approach.
Original languageEnglish
Pages (from-to)279-291
Number of pages13
JournalFatigue & Fracture of Engineering Materials & Structures
Volume24
Issue number5
DOIs
Publication statusPublished - 2001
MoE publication typeA1 Journal article-refereed

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Design of experiments
Welds
Fatigue of materials
Bending (deformation)
Torsional stress
Shear stress

Cite this

Bäckström, Mika ; Marquis, Gary. / A review of multiaxial fatigue of weldments : Experimental results, design code and critical plane approaches. In: Fatigue & Fracture of Engineering Materials & Structures. 2001 ; Vol. 24, No. 5. pp. 279-291.
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Bäckström, M & Marquis, G 2001, 'A review of multiaxial fatigue of weldments: Experimental results, design code and critical plane approaches', Fatigue & Fracture of Engineering Materials & Structures, vol. 24, no. 5, pp. 279-291. https://doi.org/10.1046/j.1460-2695.2001.00284.x

A review of multiaxial fatigue of weldments : Experimental results, design code and critical plane approaches. / Bäckström, Mika; Marquis, Gary.

In: Fatigue & Fracture of Engineering Materials & Structures, Vol. 24, No. 5, 2001, p. 279-291.

Research output: Contribution to journal › Article › Scientific › peer-review

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AU - Marquis, Gary

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AB - A survey of biaxial (bending or tension and torsion) constant amplitude fatigue of welded connections is presented. Re‐analysis of 233 experimental results from eight different studies has been performed based on hot spot stresses and three potential damage parameters: maximum principal stress range; maximum shear stress range; and a modified critical plane model for welds. Of the three methods, the critical plane model was most successful in resolving the data to a single S–N line. The design curve for all toe failures based on the critical plane model was FAT 97 with a slope of 3. By excluding butt welds and including only fillet welds that failed at the weld toe, the design curve was increased to FAT 114 with a slope of 3. However, observed scatter was 70–100% larger than that observed in uniaxial loaded specimens analysed using the hot spot approach.

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DO - 10.1046/j.1460-2695.2001.00284.x

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Bäckström M, Marquis G. A review of multiaxial fatigue of weldments: Experimental results, design code and critical plane approaches. Fatigue & Fracture of Engineering Materials & Structures. 2001;24(5):279-291. https://doi.org/10.1046/j.1460-2695.2001.00284.x

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