Damage identification of plain-woven composites at T> Tg using AE: Damage clustering and initiation detection

H Lu, T Zheng, L Zhang, K Huang, X Liu, X Han… - … Science and Technology, 2024 - Elsevier
In this work, the damage modes and their initiation detections of plain-woven composites
under tensile and compressive loads at T> T g are investigated by conducting a …

[HTML][HTML] Tailoring adherend surfaces for enhanced bonding in CF/PEKK composites: Comparative analysis of atmospheric plasma activation and conventional …

C Yildirim, H Ulus, B Beylergil, A Al-Nadhari… - Composites Part A …, 2024 - Elsevier
Here, we propose the utilization of atmospheric plasma activation (APA), which outperforms
peel-ply (PP) treatment and mechanical abrasion (MA) in achieving high-performance …

[HTML][HTML] Assessing the fracture and dynamic mechanical performance of CF/PEKK joints bonded with epoxy-based adhesive film for aerospace applications: Impact of …

C Yildirim, H Ulus, HS Sas, S Topal, M Yildiz - Composites Part A: Applied …, 2025 - Elsevier
This comprehensive study evaluates the performance of advanced thermoplastic
composites' adhesively bonded joints (ABJs), focusing on fracture toughness and dynamic …

[HTML][HTML] Impact damage and low temperature effects on carbon fiber/epoxy joints: A comparative study of hybrid bolted/bonded and bolted configurations with cross …

M Seyednourani, S Akgun, H Ulus, M Yildiz… - Composites Part A …, 2025 - Elsevier
This study investigates the tensile and tensile after impact (TAI) performance of hybrid
bolted/bonded (HBB) and only bolted (OB) carbon fiber/epoxy composite joints with cross …

In-situ acoustic emission based technique for damage detection and identification and failure mode prediction in scarf repaired composite structures

A Al-Nadhari, C Yildirim, S Topal, IE Tabrizi, M Yildiz - Measurement, 2025 - Elsevier
One of the great challenges facing adhesively bonded repair procedures in the industry is
the absence of a reliable structural health monitoring technique to ensure that the repaired …

[HTML][HTML] Enhancing interlaminar bonding quality estimation in laser-assisted fiber placement of CF/PEKK composites: A correction factor approach for improved …

A Barzegar, S Karimi, HS Sas, M Yildiz - Composites Part A: Applied …, 2024 - Elsevier
This study introduces an innovative Modified Mantell and Springer (MMS) model to more
accurately assess degree of intimate contact with improved accuracy for laser-assisted fiber …

Investigation on mechanical property and failure mechanism of the carbon/glass hybrid laminate bolted joints using acoustic emission

S Wang, M Zhao, J Zhao, Z Liu, Z Wang, Z Chang - Tribology International, 2025 - Elsevier
In this study, tensile tests and acoustic emission (AE) monitoring were performed on single
lap specimens of carbon/glass hybrid laminates with different carbon fiber layer angles. The …

Annealing impact on mechanical performance and failure analysis assisted with acoustic inspection of carbon fiber reinforced poly‐ether‐ketone‐ketone composites …

S Elmas, B Atac, CO Senol, S Topal… - Polymer …, 2024 - Wiley Online Library
This study investigates the effect of the annealing treatment for carbon fiber reinforced
Polyether‐ketone‐ketone (CF/PEKK) composite structures under flexural and compressive …

[HTML][HTML] Influence of Strand Size and Morphology on the Mechanical Performance of Recycled CF/PEKK Composites: Harnessing Waste for Aerospace Secondary …

Y Özbek, A Al-Nadhari, V Eskizeybek, M Yıldız… - Composites Part B …, 2025 - Elsevier
The flexibility and precision of automated fiber placement (AFP) have made it a standard
methodology in the aviation industry. However, the use of continuous slit tapes along …

[HTML][HTML] Analyzing stiffness variations in 3D woven composites: A multi-instrumental study on Glass/Kevlar hybridization effects under tensile and shear loads

A Al-Nadhari, H Ulus, S Topal, M Yildiz - Composites Part A: Applied …, 2025 - Elsevier
This study focuses on exploring the influence of glass/Kevlar hybridization on the tensile and
shear properties of 3D woven composites. The study delves into the behavior of two distinct …