Results 21 to 30 of about 3,609,848 (355)

Fatigue damage model of woven glass-epoxy fabric composite materials

open access: yesJournal of Materials Research and Technology, 2020
Based on the Stiffness degradation rule of woven glass fiber composite under fatigue loading, a phenomenological fatigue damage model containing two material parameters in which first is directly proportional to the fatigue life and second is inversely ...
Indra Narayan Yadav, Kamal Bahadur Thapa
doaj   +1 more source

Fatigue damage quantitative evaluation of carbon fiber composites at different stress ratios based on nonlinear ultrasonic

open access: yesResults in Physics, 2023
In order to investigate the fatigue behavior of carbon fiber composites and the influence of different stress levels on their fatigue damage characteristics, the fatigue experiments of carbon fiber composites under different stress ratios are carried out.
Silong Quan, Yuhua Zhang, Peishan Lin
doaj   +1 more source

A VIBRATIONAL DAMAGE MODEL FOR PEARS BASED ON FATIGUE ACCUMULATIVE DAMAGE THEORY [PDF]

open access: yesEngenharia Agrícola
Fatigue vibration is a primary cause of fruit damage during transportation. Drawing on the Palmgren–Miner fatigue accumulation damage theory and the correlation between fruit vibration damage characteristics and external vibration excitation, this paper ...
Chenxu Zhao   +3 more
doaj   +1 more source

Creep–Fatigue Life Estimation of Gr.91 Steel and Its Welded Joints

open access: yesMetals, 2023
A series of creep–fatigue tests of Gr.91 steel were performed at 600 °C. Fatigue life was reduced by tensile strain holding. The minimum life reduction factor was approximately 0.3.
Isamu Nonaka
doaj   +1 more source

Fatigue damage in composite cylinders

open access: yesPolymer Composites, 2009
AbstractIn this study, optimal angle‐ply orientation of symmetric composite cylinders under fatigue loading is investigated. The fiber‐reinforced plastic cylinders were manufactured from E‐glass/epoxy. The layers were manufactured symmetrically in [±75°]2, [±60°]2, [±55°]2, and [±45°]2 orientations.
Erkal, Serkan   +4 more
openaire   +3 more sources

Linear Damage Rule Life Prediction for Stress Controlled Fatigue-Creep Interaction of Aluminum Alloys [PDF]

open access: yesEngineering and Technology Journal, 2012
The fatigue-creep interaction performance of 5086 and 6061-T651 aluminum alloys were investigated for specimens tested under control stress rotating bending at a stress ratio R=-1 and 250°C temperature. The fatigue endurance limit for both alloys reduced
Salah F. Abd-El-Jabbar   +2 more
doaj   +1 more source

Fatigue Performance of Rib Beam Bridge Slabs Reinforced with Polyurethane Concrete Based on the Damage Theory

open access: yesBuildings, 2022
In this paper, the rib beam bridge slabs were taken as the research object. Static load and fatigue tests were carried out on the benchmark bridge slabs to determine the ultimate load capacity and fatigue life of the bridge slabs.
Yifan Wang   +5 more
doaj   +1 more source

Low cycle fatigue damage model and sensitivity analysis of fatigue crack initiation by finite element approach

open access: yesFracture and Structural Integrity, 2020
To meet the design requirements, different types of defects are often machined on the surface of fatigue components. Local stress concentration formed at the notch accelerates the initiation of fatigue crack, therefore greatly shortens the service lives ...
Zhi-qiang Wang   +2 more
doaj   +1 more source

The fatigue performances of carbon fiber reinforced polymer composites – A review

open access: yesJournal of Materials Research and Technology, 2022
The fatigue loading is the proximate factor leading to the performances degradation of the Carbon fiber reinforced polymer (CFRP) composites and structures, which detrimentally affects the service-life and damage tolerance.
Rui Guo   +3 more
doaj   +1 more source

A new cyclic cohesive zone model for fatigue damage analysis of welded vessel

open access: yesTheoretical and Applied Mechanics Letters
A new cyclic cohesive zone fatigue damage model is proposed to address the fatigue problem spanning high and low cycle stages. The new damage model is integrated with the damage extrapolation technique to improve calculation efficiency.
Changyuan Shen   +3 more
doaj   +1 more source

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