Article
Engineering, Manufacturing
F. Javanshour, A. Prapavesis, N. Pournoori, G. C. Soares, O. Orell, T. Parnanen, M. Kanerva, A. W. Van Vuure, E. Sarlin
Summary: This article introduces stiff and tough biocomposites prepared by in-situ polymerisation of poly (methyl methacrylate) and ductile non-dry flax fibres. The results show that composites processed with non-dry fibres have comparable shear strength but higher elongation at failure and toughness compared to composites processed with oven-dried fibres. Additionally, non-dry flax fibres significantly increase the perforation energy of flax-PMMA composites under low-velocity impact. The study also investigates the effect of non-dry fibres on fatigue life and failure mode of the composites.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Mechanics
Li Liu, Dean Hu, Detao Wan, Xingdi Hu, Xu Han
Summary: Based on low-velocity impact tests and finite element analysis, it was found that changing ply angle and increasing the number of 45 degrees/-45 degrees sub-laminates can affect the energy absorption and stiffness of composite laminates. Additionally, the interfacial strength plays a crucial role in the impact resistance of UHMWPE/LLDPE laminates.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Manufacturing
M. E. Kazemi, M. Bodaghi, L. Shanmugam, M. Fotouhi, L. Yang, W. Zhang, J. Yang
Summary: The study investigates the low-velocity impact characteristics of a new generation of thermoplastic HTCLs at various energy levels, demonstrating excellent impact properties through the use of a novel liquid thermoplastic resin. Different fabric materials in the composite layers show varied performance, with the HTCL incorporating UHMWPE fabrics performing better in low-velocity impact.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Engineering, Mechanical
S. Z. H. Shah, P. S. M. Megat-Yusoff, S. Karuppanan, R. S. Choudhry, F. Ahmad, Z. Sajid, P. Gerard, K. Sharp
Summary: The impact performance of a novel 3D-FRC composite with a resin-infused acrylic thermoplastic matrix was evaluated and compared with thermoset-based 3D-FRC. Results showed that thermoplastic-based 3D-FRC exhibited higher impact load-bearing capacity and less damage area in single impact tests, and better structural integrity and less damaged area in recurring strike tests. The superior impact resistance of thermoplastic-based 3D-FRC is attributed to their higher interlaminar fracture toughness, tougher fiber-matrix interface, matrix ductility, and unique failure mechanism of yarn straining.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Engineering, Mechanical
Goram Gohel, Somen K. Bhudolia, Kah Fai Leong, Pierre Gerard
Summary: This research presents the impact properties of novel all-thermoplastic composite structures using different thermoplastic fabrics. The results show that the all-thermoplastic composites have higher load carrying capability and lower absorbed energy compared to epoxy composites, along with improved structural integrity.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2023)
Article
Construction & Building Technology
Fathollah Taheri-Behrooz, Mahdi Torabi
Summary: The impact response of carbon fiber reinforced plastics (CFRP) under different temperatures was studied, and it was found that different energy levels had similar effects on the low-velocity impact (LVI) behavior of the samples. Delamination, matrix cracking, and fiber failure were the main damage modes.
STEEL AND COMPOSITE STRUCTURES
(2023)
Article
Engineering, Civil
Somen K. Bhudolia, Goram Gohel, Jayaram Kantipudi, Kah Fai Leong, Pierre Gerard
Summary: The study investigates the impact and flexure properties of thin hollow woven carbon fiber tubular structures with Elium (R) matrix system compared to Epoxy matrix system. Results show that WC/EL tubular configuration exhibits significant improvements in peak load and absorbed energy, making it a promising alternative for industrial applications.
THIN-WALLED STRUCTURES
(2021)
Article
Engineering, Manufacturing
Jia Ge, Wenchang Zhang, Ming Luo, Giuseppe Catalanotti, Brian G. Falzon, Colm Higgins, Dinghua Zhang, Yan Jin, Dan Sun
Summary: Carbon-fibre-reinforced-polyetherketonketone (CF/PEKK) has gained popularity in the aviation industry due to its self-healing properties and ease of recycle and repair. However, little is known about the machining performance of CF/PEKK and there is a lack of optimization study to minimize hole damage and improve production efficiency. This study presents the first multi-objective optimization study for CF/PEKK drilling. A hybrid optimization algorithm combining Non-dominated Sorting Genetic Algorithm-II (NSGA-II) and Techniques for Order of Preference by Similarity to Ideal Solution (TOPSIS) is used to obtain Pareto solutions and rank them based on their closeness to ideal solutions. Experimental validation shows that the proposed method achieves 91.5-95.7% prediction accuracy and effectively controls delamination and thermal damage within acceptable limits. The significantly different optimal drilling parameters for CF/PEKK compared to CF/epoxy are attributed to the thermoplastic nature of CF/PEKK and its unique thermal/mechanical interaction characteristics during machining.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Engineering, Multidisciplinary
M. E. Kazemi, L. Shanmugam, A. Dadashi, M. Shakouri, D. Lu, Z. Du, Y. Hu, J. Wang, W. Zhang, L. Yang, J. Yang
Summary: This study investigates the effects of different fiber types, resin types, and stacking sequences on the dynamic response of fiber-reinforced polymer composite laminates under low-velocity impact tests. Results show that the hybrid system with UHMWPE fibers on the sides demonstrates lower structural loss and absorbed energy, and the newly developed TP laminate exhibits extended plasticity and ductile behavior. Additionally, the TP laminate shows lower structural loss, contact force, and absorbed energy compared to the TS counterparts.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Chemistry, Physical
Aburpa Avanachari Sivakumar, Sankarasabapathi Sankarapandian, Siva Avudaiappan, Erick I. Saavedra Flores
Summary: This research explores the use of eggshell bio-filler in natural fiber composites, and finds that the addition of 6% eggshell powder as filler significantly improves the mechanical properties of the composites. Among the three fibers tested, coir fiber composites with 6% eggshell powder show a substantial increase in tensile, flexural, impact, and hardness strength.
Article
Materials Science, Textiles
Zeynab Behroozi, Hooshang Nosraty, Majid Tehrani
Summary: The study found that a 45-degree stitching angle exhibited the best performance in resisting ballistic impact, with significantly higher energy absorption compared to other stitching angles. Stitching also helps reduce damage area in both front and back sides of the composites as well as inhibiting delamination.
JOURNAL OF INDUSTRIAL TEXTILES
(2022)
Article
Materials Science, Composites
Minglonghai Zhang, Mabel Mei Po Ho, Hong Hu
Summary: This paper investigates the low-velocity impact performance of 3D auxetic composite with re-entrant triangle inclusions through experiments and finite element simulations. The results show that auxetic composites exhibit better energy absorption and impact resistance compared to non-auxetic composites. The embedding of more inclusions further enhances the impact resistance of auxetic composites. The research provides insights into the impact performance of auxetic composites with random inclusions.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Physical
Mahfuz Bin Rahman, Lvtao Zhu
Summary: This study experimentally investigates the low-velocity impact response of three-dimensional integrated woven spacer sandwich composites. The results show that the stiffness and energy absorption capacity are significantly affected by the core pile's heights and impact energies. The face sheet thickness does not have a significant influence on the impact response. Different damage and failure mechanisms were observed under different impact energies.
Article
Mechanics
Wenzhi Wang, Yueran Zhao, Shangjun Chen, Xiaochao Jin, Xueling Fan, Chunsheng Lu, Chengxing Yang
Summary: Shape memory alloy wires embedded glass fiber-reinforced polymer (SMA-GFRP) laminates have great potential in engineering applications, exhibiting excellent low-velocity impact resistance. The mechanical behaviors of SMA wires and SMA-GFRP laminates are significantly influenced by the initial impact energy. Experimental and simulation results show that SMA-GFRP laminates can mostly recover deformation under low and medium initial impact energies, but deformation cannot be recovered under high impact energy.
COMPOSITE STRUCTURES
(2021)
Article
Polymer Science
Shuangxi Guo, Xueqin Li, Tianwei Liu, Guangyu Bu, Jiangbo Bai
Summary: A full-scale model for predicting low-velocity impact damage and compression after impact strength was established. The study found that as the impact energy reaches a certain value, the compression strength no longer decreases with the increase in impact energy, while reducing the ply thickness can effectively improve damage resistance and compression strength.
Article
Engineering, Multidisciplinary
Tarkan Akderya, Ugur Kemiklioglu, Onur Sayman
COMPOSITES PART B-ENGINEERING
(2016)
Article
Materials Science, Composites
Ugur Kemiklioglu, Buket Okutan Baba
POLYMER COMPOSITES
(2019)
Article
Materials Science, Multidisciplinary
Ugur Kemiklioglu, Buket Okutan Baba
MATERIALS RESEARCH EXPRESS
(2019)
Article
Engineering, Multidisciplinary
Ugur Kemiklioglu, Buket Okutan Baba
COMPOSITES PART B-ENGINEERING
(2019)
Article
Materials Science, Multidisciplinary
Ugur Kemiklioglu, Emine Kemiklioglu
MATERIALS RESEARCH EXPRESS
(2019)
Article
Engineering, Chemical
Ugur Kemiklioglu, Buket Okutan Baba
Summary: This study investigates the mechanical behaviors of adhesively bonded composite joints through different mechanical tests. The results show that the strength of these joints decreases with increasing axial impact energy and vibration cycles, with a higher strength observed at 10 J energy compared to other impact energy values.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Biomaterials
Melike Seylan Akis, Emine Kemiklioglu, Ugur Kemiklioglu
Summary: Cinnamaldehyde (CA) doped polyurethane cholesteryl pelargonate cholesteric liquid crystal composite membranes were produced for use in biological applications. Increasing CA concentration improved the biological properties of the membranes, as shown by the relationship between blood coagulation and protein adsorption. The effect of CA on the hydrophobicity of the membranes was also investigated, and it was found that the mechanical strength increased while the ability to elongate decreased with increasing CA dopant concentration.
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS
(2023)
Article
Polymer Science
Ugur Kemiklioglu
Summary: This study investigated the effect of vibration cycle on the mechanical properties of composite plates. It was found that as the vibration cycle increased, the fibers were gradually damaged at different angles, resulting in tensile damage and decreased tensile strength and elongation of the composite plates.
INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION
(2023)
