A5017996629- High Temperature Alloys and Creep
- Fatigue and fracture mechanics
- Microstructure and Mechanical Properties of Steels
- Hydrogen embrittlement and corrosion behaviors in metals
- Manufacturing Process and Optimization
- Design Education and Practice
- Additive Manufacturing and 3D Printing Technologies
- Energy Efficiency and Management
- Multiferroics and related materials
- High-Temperature Coating Behaviors
- Ferroelectric and Piezoelectric Materials
- Mechanical Failure Analysis and Simulation
- Metallurgy and Material Forming
- Microstructure and mechanical properties
- Non-Destructive Testing Techniques
- Advanced Condensed Matter Physics
- Metal Alloys Wear and Properties
- Probabilistic and Robust Engineering Design
- Metal Forming Simulation Techniques
- Ultrasonics and Acoustic Wave Propagation
Northwestern Polytechnical University
2022-2024
University of Nottingham
2023
Ollscoil na Gaillimhe – University of Galway
2015-2019
University of Limerick
2017
Northeastern University
2014
Purpose The purpose of this paper is to apply the concept equivalent initial flaw size (EIFS) anisotropic nickel-based single crystal (SX) material, and predict fatigue life on basis. crack propagation law SX material at different temperatures weak correlation EIFS values verification under loading conditions are also investigated. Design/methodology/approach A three-parameter time (TTCI) method with multiple reference lengths established, which include TTCI backstepping fitting method....
Abstract This paper presents a crystal plasticity model to predict the tensile response and crack initiation in mixed ferrite‐martensite material with low volume fraction of pro‐eutectoid ferrite, representative welding‐induced intercritical heat‐affected zone. It is shown that small fractions ferrite can have significant effect on strength ductility depending grain orientation. For relatively “soft” grains, microcracks grow across interferrite ligaments damage accumulating leading reduction...
The objective of this paper is to clarify the nature equivalent gauge length miniaturized creep test methods. A mechanics-based approach was employed allow conventional uniaxial data be obtained from non-conventional tests, under steady-state creep. interpretation based on reference stress method. On basis, theoretical derivation lengths for a range miniature specimen types presented, including sub-size uniaxial, small punch, impression, rings, 2 bars, and bending beams plate. Then effect...
Failure in steel weldments operating at high temperatures often occurs the heat-affected zone adjacent to weld. Such failures can be a result of material inhomogeneity within and case tempered martensite steels have been linked with regions untransformed α (ferrite) phase or over-tempered intercritical region zone. In this work, two-dimensional Voronoi tessellation is used construct polygonal cells represent microstructure weld steel. The construction treated as representative volume element...
Welded joints in tempered 9Cr–1Mo operating at elevated temperatures are well known to be prone premature failure due cracking the heat-affected zone. This paper describes a crystal plasticity model predict microcrack initiation and evolution inter-critical zone of welded steel temperature. A finite element indicates that micro-cracks mostly nucleate prior austenite grain boundaries boundary clustered regions. Inter-granular trans-granular microcracking shown key predicted microdamage...
This paper presents a study on high temperature cyclic plasticity of welded P91 T-joint under internal pressure, in the context low cycle fatigue (HTLCF) performance such connections. In present work, attention is focused development multi-material model for plasticity, including effects different weld-related material zones, namely, parent metal, weld metal and heat-affected zone. The behaviour three zones identified from previously-published temperature, test results uniaxial specimens,...
Purpose In order to promote the development of modern manufacturing towards high-precision, high-quality intelligence and precision, this paper puts forward concept physical conducts a more in-depth theoretical discussion on its basic connotation characteristics, based which application in cutting autoclave curing molding composite material is briefly introduced. Design/methodology/approach As brand-new concept, determines optimal process parameters according multidisciplinary simulations,...
Purpose This paper aims to propose a new concept of product manufacturing mode which takes physical theory as the basic starting point. In this work, authors intend systematically define connotation and extension manufacturing, sort out typical characteristics in order general manufacturing. Design/methodology/approach How study combination physics, mathematics, mechanics other disciplines with disciplines, how elevate modern science height, has always been problem for scientists field...