Results 61 to 70 of about 49,898 (286)
Applied Sciences, 2020 This work proposes a novel methodology for the complete characterization of fiber reinforced concrete (FRC). The method includes bending tests of prismatic notched specimens, based on the Standards for FRC, tensile and pure shear tests.
Marcos G. Alberti +3 more
doaj +1 more source
Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading
Advanced Engineering Materials, EarlyView.The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley +1 more source
Karl Popper and the Mechanisms of Hydrogen Embrittlement
Advanced Engineering Materials, EarlyView.Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley +1 more source
Advanced Engineering Materials, EarlyView.A two‐dimensional multiscale finite element analysis framework was established for the first‐generation MoSiBTiC alloy, and the mechanical and fracture‐related parameters of the constituent phases were calibrated through experiments and simulations. The framework provides a basis for analyzing crack propagation behavior in its complex microstructure ...
Junfeng Du +4 more
wiley +1 more source
Splitting- and Direct-Tensile Strengths of Ambient Cured Geopolymer Concrete with Glass Fibers [PDF]
, 2023 In this paper, an experimental program was undertaken to investigate the splitting-tensile strength and the direct-tensile strength of geopolymer concrete reinforced with glass fibers (GCGF).
Shehroze Ali (20167752) +2 more
core
Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys
Advanced Engineering Materials, EarlyView.Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak +3 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.The temperature dependence of fatigue behavior in nickel‐based superalloys is investigated through high‐resolution measurements of plastic localization. While increasing temperature reduces localization and enhances fatigue performance in René 88DT, Inconel 718 exhibits a sharp degradation at intermediate temperature due to intensified slip ...
M. Calvat +5 more
wiley +1 more source
International Journal of Coal Science & Technology, 2018 For understanding acoustic emission (AE) activity and accumulation of micro-damage inside rock under pure tensile state, the AE signals has been monitored on the test of directly tension on two kinds of marble specimens.
Ruifu Yuan, Bowen Shi
doaj +1 more source
MECHANISM AND ESTIMATION OF TENSILE-REINFORCING EFFECTS IN THE DIRECT SHEAR TEST
Jioshinsetikkusu Rombunshu (Geosynthetics Engineering Journal), 2008 土の一様なひずみに起因する補強材引張力は常に補強材面に沿った摩擦力が作用するが，不連続な変位に起因する補強材引張力は摩擦力だけでなく補強材面に垂直な力が土に作用する．直接せん断(DS)試験では土のひずみよりも不連続な変位に起因する引張り補強効果が強度発現の主因となるため，土の摩擦力との釣合いを基本とするせん断強度の推定式では試験結果をうまく説明できない．そこで，本研究では，不連続な変位場で表れる力の釣合いをモデル化したせん断強度の推定式を提案し，補強土のDS 試験結果と比較した．その結果，提案式では引張力の発達分布の違いによる補強効果の差を表現でき，せん断強度を適切に評価できることがわかった．
MATSUSHIMA, Kenichi +3 more
openaire +2 more sources
Lifetime evaluation of concrete structures under sustained post-peak loading [PDF]
, 2005 Experimental tests on crack propagation in concrete under constant post-peak loading are simulated using the finite element method and the cohesive crack model, in both Mode I and Mixed-mode conditions.
Silvio Valente +3 more
core +1 more source