Bohua Zhang
RMIT University
Serviceability (structure)Digital image correlationNormalization (statistics)RandomnessMode (statistics)Drop (liquid)Pipeline (computing)Strain hardening exponentComposite materialHardening (metallurgy)Materials scienceReliability engineeringExponentEngineering structuresDuctile materialsShear loadSmall strainLiterature surveyMixed mode fractureIn planeExperimental methodsResearch needsCompliance methodComputer scienceFracture (geology)Reliability (statistics)Crack tip opening displacementFracture mechanicsFailure mode and effects analysisStructural engineeringAsset (computer security)Stochastic processSpatial variabilityFracture toughness
8Publications
2H-index
9Citations
Publications 6
Newest
#1Weigang Wang (RMIT: RMIT University)H-Index: 5
#2Yanlin Wang (RMIT: RMIT University)H-Index: 2
Last. Chun-Qing Li (RMIT: RMIT University)H-Index: 22
view all 5 authors...
Abstract Buried pipes, as a significant civil infrastructure, play a vital role in water, oil and gas transports. In this paper, a systematic method is developed to accurately predict the failure probability of a buried pipeline network at various levels of failure mode, pipe segment and whole pipeline system. A framework of system reliability is proposed to integrate the ultimate and serviceability failures. The random field theory is employed to model the distribution of corrosion, considering...
Source
#1Yanlin Wang (RMIT: RMIT University)H-Index: 2
#2Weigang Wang (RMIT: RMIT University)H-Index: 5
Last. Chun-Qing Li (RMIT: RMIT University)H-Index: 22
view all 4 authors...
Abstract Methods to establish the fracture resistance curves for ductile materials have been standardised only for mode-I fracture tests. However, the failures of engineering structures can be caused by various loading modes due to the complex loading conditions or inclined crack-like flaws. This paper develops a new method to construct the fracture resistance curves for ductile steels under different in-plane loadings, based on the digital image correlation technique. Fracture tests are conduct...
1 CitationsSource
#1Hui Gao (RMIT: RMIT University)H-Index: 2
#2Weigang Wang (RMIT: RMIT University)H-Index: 5
Last. Chun-Qing Li (RMIT: RMIT University)H-Index: 22
view all 5 authors...
Normalization method is a practical method for determining the J-R curves and fracture toughness of steels. There is some concern, however, about the performance of this method on steels with small strain hardening exponent and yield strength due mainly to the assumption of infinite strain hardening exponent (n). This paper intends to analytically modify the normalization method by removing this assumption and incorporating the strain hardening in calculating the blunting corrected crack length....
1 CitationsSource
#1Hui Gao (RMIT: RMIT University)H-Index: 2
#2Chun-Qing Li (RMIT: RMIT University)H-Index: 22
Last. Bohua Zhang (RMIT: RMIT University)H-Index: 2
view all 5 authors...
Unloading compliance (UC) method and normalization method (NM) are two of the most commonly used methods for determining the fracture toughness of materials. However, considerable differences often exist in the fracture toughness determined by these two methods, which solicits a new method to determine the fracture toughness accurately. In this paper, the compliance of crack length differences as measured by the crack length difference ratio Si is discovered, analysed and verified by experiments...
Source
#1Yanlin Wang (RMIT: RMIT University)H-Index: 2
#2Weigang Wang (RMIT: RMIT University)H-Index: 5
Last. Chun-Qing Li (RMIT: RMIT University)H-Index: 10
view all 4 authors...
Abstract Mode I fracture mechanics has been relatively mature but mixed mode fracture mechanics continues to present challenges, in particular for ductile materials under multiaxial stresses. Since most engineering materials, e.g., metals, exhibit elasto-plastic or ductile behaviour and are subjected to inclined cracks and/or multiaxial loading, there is a well justified need to establish a solid understanding of their fracture behaviour under mixed modes. The intention of this paper is to criti...
9 CitationsSource
#1Hui Gao (RMIT: RMIT University)H-Index: 2
#2Chun-Qing Li (RMIT: RMIT University)H-Index: 10
Last. Bohua Zhang (RMIT: RMIT University)H-Index: 2
view all 5 authors...
Abstract Unloading compliance method (UC) and normalization method (NM) are two of the most commonly used methods for determining the fracture toughness of steels. Since the NM has been recognized as the most practical method there is a need to evaluate its accuracy against the classic UC method. This paper intends to investigate the factors that affect the agreement between UC and NM, including material mechanical properties, specimen thickness, the ratio of initial crack length to width ( a 0 ...
2 CitationsSource