Article
Materials Science, Composites
Veerappan Balasubramani, Sadayan Rajendra Boopathy, Balasubramaniam Stalin, Vijayananth Kavimani
Summary: This research focuses on the effect of stacking sequence on the mechanical behavior of laminates. The angle-ply laminate specimens were analyzed theoretically and correlated with experimental results. It was found that (60/30/60/30)(S) exhibited the highest interlaminar shear strength and transverse stiffness, as well as the highest rate of residual strength degradation.
POLYMER COMPOSITES
(2022)
Article
Mechanics
Neslihan Hayta, Gaye Kaya
Summary: This study investigated the impact behavior of glass/epoxy face sandwich composites integrated with a novel 3D multi-layer stitched core. It was found that the number of core layers, dimensions of core unit-cells, and stitching density were the most important parameters affecting the impact failure of the sandwich composites.
COMPOSITE STRUCTURES
(2022)
Article
Construction & Building Technology
Nicholas R. Scott, Damian L. Stoddard, Matthew D. Nelms, Zachary Wallace, Ivy Turner, Lena Turner, Megan Croom, Katelyn Franklin, Samantha Sandifer, Mohammed S. Ali Al-fahdi, Tyler Butler, A. M. Rajendran
Summary: The mechanical characterization of Portland cement mixed with hollow glass microspheres of different crushing strengths was conducted to determine the quasi-static and dynamic responses of the composites. Both experimental and computational simulations showed that the addition of glass inclusions delayed the onset of effective plastic strain but may result in shorter time to failure compared to Portland cement. Ideal volume fractions for maximizing compressive strength and energy absorption were found to be 5% for 3 M (10,000 psi glass microspheres) and 15% for FM (500 psi glass microspheres) based on experimental and modeling results.
CEMENT AND CONCRETE RESEARCH
(2022)
Article
Mechanics
Muhammad Basha, A. Wagih, A. Melaibari, G. Lubineau, A. M. Abdraboh, M. A. Eltaher
Summary: This article investigates the damage modes of CFRP/wood sandwich composites during low velocity impact and compression after impact, focusing on different wood core types and wood fiber orientations. Results show that the laminate with balsa core wood exhibits higher impact load and dissipated energy, while the laminate with birch core wood has slightly larger CAI strength. Specific impact load, dissipated energy, and CAI strength of balsa core laminate are significantly higher compared to birch core laminate.
COMPOSITE STRUCTURES
(2022)
Article
Mechanics
Ajay Kumar, Aman Khurana, Asesh Kumar Patra, Yamnesh Agrawal, M. M. Joglekar
Summary: This study investigates the feasibility of using multilayered DE composites to overcome the viscoelastic effects of DE materials and compares the electromechanical performance of bi-layer and tri-layer DE composites with a mono-layer membrane. The findings show that the bi-layer DE composite performs better in terms of actuation levels, hysteresis, and creep response. These results hold promise for improving the actuation capabilities of DE materials while maintaining dielectric breakdown strength.
COMPOSITE STRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
Lidan Xu, Mingfang Shi, Zhenqing Wang, Xiangyu Zhang, Gang Xue
Summary: The impact response of SMAHC prepared by vacuum-assisted resin infusion was investigated experimentally and numerically, showing that the impact threshold energy value of impact damage of SMAHCs is higher due to the excellent energy absorption capacity of SMA.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Engineering, Civil
Ankush P. Sharma, R. Velmurugan
Summary: This study analytically derived the low-velocity impact behavior and energy absorption mechanisms of fibre metal laminates (FMLs) at different impact energy levels. The results showed that the deformation energy of FML constituents accounted primarily for the overall energy absorption, and FMLs exhibited higher impact resistance compared to monolithic titanium. The predicted force history and energy absorption of FMLs were in good agreement with experimental results.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Aerospace
Zaigham Saeed Toor, Abrar H. Baluch, Abdul Wadood, Atiq Ur Rehman, Mohsin Saleem, Muhammad Shoaib Butt, Khazar Hayat
Summary: This article uses a computational method to evaluate the dynamic response of Carbon fiber reinforced polymer composite material. Three-dimensional, computational shell, and two-dimensional modeling of a protective system are conducted using Finite Element Method. Velocity variation in high and hyper speed range is conducted to simulate the influence of space debris impacts on carbon epoxy composites. The computational results show good convergence with the available experimental results, with variation less than 10%. Increased impacting velocity leads to increased stresses, energy absorbed, damaged area, and computation time.
Article
Materials Science, Composites
Jintao Li, Minjie Yang, Xiaolong Zhou
Summary: The study investigated the effects of various SnO2 contents on the stress, strain, and microstructure of AgCuO(10)SnO2 composites during hot extrusion. It was found that CuO structure changes during extrusion, while redistribution of CuO and SnO2 improves microstructure uniformity. Samples with 5% SnO2 content showed the highest performance.
POLYMER COMPOSITES
(2021)
Article
Environmental Sciences
Nihan Gulmez
Summary: This study investigates the substitution effects of marble powder and iron particles in concrete. The results show that the 28-day concrete mixture with 10% marble powder and 20% iron waste exhibits the best physical and mechanical performance, and the capillary water absorption is improved with the substitution of marble powder.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Mechanics
Mahsa Seyyednourani, Sercan Akgun, Hasan Ulus, Mehmet Yildiz, Hatice S. Sas
Summary: This study investigates the low-velocity impact response and compression-after-impact (CAI) strength of composite laminates under -55 degrees C temperature. The experiments examine the damages caused by low-velocity impact using infrared thermography and elaborate on the impact damage's effect on the failure mechanism using acoustic emission inspection. The results reveal that low temperature increases the compressive residual strength, but the extent of change depends on the load and lay-up configuration, with angle-ply laminates showing a more significant alteration in the damage growth mechanism under low temperature.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Manufacturing
Fernando Rojas-Sanchez, Anthony M. Waas
Summary: Experimental results from DVC analysis show that damage initiation of a single-edge notched cross-ply [90/0/90] laminate loaded in tension occurs through delamination of one of the interfaces near the tip of the notch at approximately 24% of the ultimate load. These results provide valuable insights into the progressive failure behavior of fiber reinforced composite laminates, aiding in the development and validation of failure analysis models.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Engineering, Multidisciplinary
Zeshan Yousaf, Neil F. Morrison, William J. Parnell
Summary: All-polymer syntactic foams were studied under large strain cyclic and monotonic tensile loading to reveal their tensile stress-strain behavior, recoverability, tensile strength, and elongation at break. The study found that higher volume fractions of hollow thermoplastic microspheres increase the stiffness of the material and lead to damage at lower levels of strain.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Polymer Science
Eija Sailynoja, Sufyan Garoushi, Pekka K. Vallittu, Lippo Lassila
Summary: This research investigated the physical and handling properties of new experimental short-fiber-reinforced DC resin composites compared to conventional DC materials. The results showed that the short-fiber-reinforced composite exhibited superior fracture toughness, with differences in flexural properties among different materials. The curing mode significantly affected the DC% and flexural properties, indicating material-dependent outcomes.
Article
Chemistry, Physical
Kangdi Zhong, Jiming Zhou, Chentong Zhao, Kang Yun, Lehua Qi
Summary: Carbon fiber reinforced aluminum matrix hierarchical composites have shown great potential as lightweight materials for aerospace. Two types of composites were prepared using pressure infiltration method, and their microstructure, mechanical properties, and failure behavior were analyzed to understand their damage mechanisms. The results revealed that the infiltration process and solidification behavior of the composites can be understood by studying the evolution of macrosegregation and microstructures. Compared to the matrix alloy, the bending strength of H-Cf/Al composites increased by 47%, and the compression strength of P-Cf/Al composites increased by 128%. The study also identified crack propagation behaviors and damage mechanisms of the composites, providing insights for their preparation and application.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Mechanics
J. Zhou, Z. W. Guan, W. J. Cantwell
COMPOSITE STRUCTURES
(2015)
Article
Materials Science, Multidisciplinary
H. Alhussein, R. Umer, S. Rao, E. Swery, S. Bickerton, W. J. Cantwell
JOURNAL OF MATERIALS SCIENCE
(2016)
Article
Materials Science, Composites
S. Rao, R. Umer, J. Thomas, W. J. Cantwell
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2016)
Article
Materials Science, Composites
Hassan Z. Jishi, Rehan Umer, Wesley J. Cantwell
POLYMER COMPOSITES
(2016)
Article
Mechanics
Z. Xu, F. Yang, Z. W. Guan, W. J. Cantwell
COMPOSITE STRUCTURES
(2016)
Article
Engineering, Multidisciplinary
J. Zhou, Z. W. Guan, W. J. Cantwell
COMPOSITES PART B-ENGINEERING
(2016)
Article
Materials Science, Composites
E. Sitnikova, Z. W. Guan, W. J. Cantwell
COMPOSITES SCIENCE AND TECHNOLOGY
(2016)
Article
Engineering, Mechanical
T. Boonkong, Y. O. Shen, Z. W. Guan, W. J. Cantwell
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2016)
Article
Engineering, Mechanical
R. A. Alia, Z. W. Guan, A. K. Haldar, W. J. Cantwell
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2016)
Article
Materials Science, Multidisciplinary
H. Z. Jishi, R. Umer, W. J. Cantwell
MATERIALS & DESIGN
(2016)
Article
Engineering, Mechanical
Christoforos S. Rekatsinas, Dimitris K. Siorikis, Christos V. Nastos, Nikolaos A. Chrysochoidis, Theodosios C. Theodosiou, Ahmet S. Yigit, Andreas P. Christoforou, Dimitris A. Saravanos
Summary: This paper proposes and validates a computationally efficient impact model that includes a new semi-empirical viscoplastic contact law for crushable ice impactors and a new time domain spectral shear plate finite element formulation. The model is validated through high-velocity spherical hailstone impact experiments on woven glass/epoxy composite plate target structures, and the results show the adequacy of the proposed contact law in capturing the impact loading as well as the accuracy and computational efficiency of the computational framework compared to other numerical tools.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2023)
Proceedings Paper
Engineering, Aerospace
Andreas P. Christoforou, Ahmet S. Yigit
Summary: This paper presents guidelines on the use of a characterization diagram for impact dynamics scaling and damage tolerance studies for aerospace structures. It demonstrates that the diagram can be used for both rigid and deformable impactors, providing useful information on impact response and damage prediction. It is expected to be a valuable tool for designers and experimentalists working in the field of composite structures.
2023 10TH INTERNATIONAL CONFERENCE ON RECENT ADVANCES IN AIR AND SPACE TECHNOLOGIES, RAST
(2023)
Article
Engineering, Multidisciplinary
Andreas P. Christoforou, Ahmet S. Yigit
JOURNAL OF ENGINEERING RESEARCH
(2016)
Article
Engineering, Mechanical
Ahmed H. A. Ibrahim, Ahmet S. Yigit
JOURNAL OF COMPUTATIONAL AND NONLINEAR DYNAMICS
(2015)
Article
Materials Science, Characterization & Testing
R. Umer, S. Rao, J. Zhou, Z. Guan, W. J. Cantwell
POLYMERS & POLYMER COMPOSITES
(2016)
