Effects of material properties and mismatch on unified constraint parameter

Xiao, J.Y.; Wang, G.Z.; Tu, S.T.; Xuan, Fu‐Zhen

doi:10.1016/j.engfracmech.2022.108526

Cited by 7 publications

(9 citation statements)

References 45 publications

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“…The reason for this is that the m and m ref calculated from the J‐ CTOD lines (Figures 10 and 11) change simultaneously with the change of M or Δn , while their ratio A d * = m ref / m is nearly unchanged. This result is in agreement with that in the authors' recent study, 51 which has shown independence of A d * on material properties and strength mismatch for cracks in plates. This advantage of A d * is beneficial to develop its solutions for cracked structures and its engineering application 51 …”

Section: Resultssupporting

confidence: 93%

“…The m and m ref are mainly related to geometric constraint and material properties, but their ratio (i.e., A d *) in Equation ( 4) may be independent of material properties. This has been proved in a recent work of authors 51 that the parameter A d * is independent of strength mismatch in welded joints and material properties in homogeneous components. The advantages of A d * mainly include its capability of characterizing both constraints and its independences on load, material properties, and strength mismatch.…”

Section: Unified Constraint Parameter a D *mentioning

confidence: 75%

“…The advantages of A d * mainly include its capability of characterizing both constraints and its independences on load, material properties, and strength mismatch. These advantages facilitate developing A d * solutions for cracked structures (including welded structures), establishing the correlation between fracture properties of materials and A d *, and engineering application of A d * 40,41,50,51 . By using Equation (4), the A d * value can be calculated.…”

Section: Unified Constraint Parameter Ad*mentioning

confidence: 99%

“…This advantage of A d * is beneficial to develop its solutions for cracked structures and its engineering application. 51…”

Section: The J-ctod Relations and Constraint Parameter A D * Of Bi-ma...mentioning

confidence: 99%

“…A general quantitative correlation equation between the master curve reference temperature T 0 ( T 0 is a parameter for characterizing cleavage fracture toughness) and A d * has been established 50 . In the latest study of authors, 51 it has been shown that the A d * is basically independent of material properties and strength mismatch for cracks in welded and homogeneous plates. These characteristics of A d * facilitate developing its solutions for welded and homogeneous structures.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Correlation between fracture toughness and constraint of bi‐material interfaces with different mechanical mismatches

Xiao

Wang

Xuan

et al. 2022

Fatigue Fract Eng Mat Struct

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In this work, the correlation between ductile fracture toughness and a new unified constraint parameter A d * for bi-material interfaces with different mechanical mismatches (strength and hardening mismatches) has been investigated based on finite element analysis and experimental data validation. The results show that with increasing crack depth (geometric constraint) and mechanical mismatch level (increasing undermatch or overmatch level), the J-R curves and fracture toughness J C of bi-material interfaces decrease. The constraint parameter A d * values of bi-material interface cracks are basically independent of the strength and hardening mismatches. A general correlation equation between fracture toughness J C and constraint parameter A d * has been obtained, which may be applied to prediction of fracture toughness of any specimens or components with different geometric constraints and material properties mismatches (including homogeneous materials). The prediction capability of the correlation equation has been validated by experimental fracture toughness data of cracks with different strength and hardening mismatches in dissimilar metal welded joints.

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Section: Resultssupporting

confidence: 93%

Section: Unified Constraint Parameter a D *mentioning

confidence: 75%

Section: Unified Constraint Parameter Ad*mentioning

confidence: 99%

“…This advantage of A d * is beneficial to develop its solutions for cracked structures and its engineering application. 51…”

Section: The J-ctod Relations and Constraint Parameter A D * Of Bi-ma...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%