Sensitivity analysis for effects of displacement amplitude and loading frequency on low-cycle fatigue lifetime in carbon/epoxy laminated composites

Azadi, Mohammad; Alizadeh, Mohsen; Sayar, Hassan

doi:10.1051/matecconf/201816522021

Cited by 8 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The sensitivity analysis for effects of the displacement amplitude and the loading frequency on the low-cycle fatigue lifetime in carbon/epoxy laminated composites was investigated by Azadi et al [13]. Experimental results illustrated that by increasing the displacement amplitude, the low-cycle fatigue lifetime decreased, as expected.…”

Section: Introductionmentioning

confidence: 87%

See 1 more Smart Citation

Prediction of Fiber Breakage and Matrix Cracking in Polymeric Composites Under Low-Cycle Fatigue Regimes by Fuzzy and Wavelet Clustering of Acoustic Emission Signals

Esfarjani

Azadi

Alizadeh

et al. 2021

Comp Mech Comput Appl Int J

Self Cite

View full text Add to dashboard Cite

One of methods for detecting cracks and estimating their growth in materials such as composites is the acoustic emission technique. The detection of damages, cracks and their growth in industrial composite structures, under static and dynamic loads, has a significant importance, in order to prevent any damages and increase the reliability. Therefore, achieving required technical knowledge in this field, can be helpful in repairing and the maintenance of the part in industries. The prediction of the damage in polymeric composites under static loads has been already investigated by researchers; however, under cyclic loadings, researches about this behavior are still rare. In this study, by acoustic emission sensors and analyzing experimental data, the damage, including matrix cracking, the fiber breakage and other damages (debonding, fiber pull-out and delamination) during dynamic loading was investigated. At the first stage, standard specimens were made by the pure resin epoxy and the pure carbon fiber, subjected to monotonic tensile loading and then, the frequency of the failure was extracted. Then, composite specimens were loaded in the low-cycle fatigue regime.Mechanical test results and acoustic emission data were analyzed by fuzzy C-Means and wavelet transform methods and then compared to each other to find the percentage of failures in first, mid-and last cycles by the differentiation of failure types. Results clearly indicated that the acoustic emission approach is useful and an effective tool for identifying and detecting damages in polymeric composites.

show abstract

Section: Introductionmentioning

confidence: 87%

“…The sensitivity analysis depicted that the displacement amplitude was sensitive on both the fatigue lifetime and the maximum stress. The loading frequency was sensitive to the maximum stress and was not sensitive to the fatigue lifetime [13].…”

Section: Introductionmentioning

confidence: 95%

Prediction of Fiber Breakage and Matrix Cracking in Polymeric Composites Under Low-Cycle Fatigue Regimes by Fuzzy and Wavelet Clustering of Acoustic Emission Signals

Esfarjani

Azadi

Alizadeh

et al. 2021

Comp Mech Comput Appl Int J

Self Cite

View full text Add to dashboard Cite

show abstract

“…The P ‐value is to determine the effect of factors on targets. If the P ‐value is less than 0.05, then the related factor would be effective 37‐40 …”

Section: Factorial Methodsmentioning

confidence: 99%

Sensitivity analysis of mechanical properties and ductile/brittle behaviors in aluminum‐silicon alloy to loading rate and nano‐particles, considering interaction effects

Azadi

Zomorodipour

Fereidoon

2020

Engineering Reports

Self Cite

View full text Add to dashboard Cite

Aluminum‐silicon alloys have been widely used in automotive industries. To know mechanical properties of such materials is essential for engineers to have a superior design for components. Therefore, in this article, the sensitivity analysis of mechanical and fracture features in the aluminum alloy has been performed to find the effect of the loading rate and nano‐particles. For this objective, tensile tests were performed on casting standard specimens. Then, obtained experimental data were analyzed by the Minitab software, using the factorial method. In addition, the interaction between the effect of the loading rate and the addition of nano‐particles, on mechanical properties and ductile/brittle behaviors, was also investigated. Obtained results indicated that the yield stress, the elastic modulus and the elongation were sensitive to the interaction of both factors (the multiply of the nano‐particle addition and the loading rate). Besides, the fracture surface illustrated that by increasing the loading rate and the addition of nano‐particles, the brittleness of the material increased.

show abstract

Metamodeling-assisted probabilistic first ply failure analysis of laminated composite plates—RS-HDMR- and GPR-based approach

Kushari

Gupta

Vaishali

et al. 2022

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

Sensitivity analysis for effects of displacement amplitude and loading frequency on low-cycle fatigue lifetime in carbon/epoxy laminated composites

Cited by 8 publications

References 15 publications

Prediction of Fiber Breakage and Matrix Cracking in Polymeric Composites Under Low-Cycle Fatigue Regimes by Fuzzy and Wavelet Clustering of Acoustic Emission Signals

Prediction of Fiber Breakage and Matrix Cracking in Polymeric Composites Under Low-Cycle Fatigue Regimes by Fuzzy and Wavelet Clustering of Acoustic Emission Signals

Sensitivity analysis of mechanical properties and ductile/brittle behaviors in aluminum‐silicon alloy to loading rate and nano‐particles, considering interaction effects

Metamodeling-assisted probabilistic first ply failure analysis of laminated composite plates—RS-HDMR- and GPR-based approach

Contact Info

Product

Resources

About