Article
Engineering, Manufacturing
Andrea Scantamburlo, Filippo Zanini, Giovanni Lucchetta, Marco Sorgato
Summary: This study investigates the combined effect of alternate dynamic packing and rapid heat cycle moulding on the weld line mechanical properties of glass fibre reinforced thermoplastics. The results show a significant increase in the strength and stiffness of the specimens.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Mechanics
Trevor Sabiston, Bin Li, Jidong Kang, David Wilkinson, Carlos Engler-Pinto
Summary: The fatigue characterization of injection moulded carbon fiber was studied by conducting fatigue tests and validating a model using peak interface stress as a failure criterion.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Multidisciplinary
J. Sommer, M. Hajikazemi, I. De Baere, W. Van Paepegem
Summary: The tension-tension fatigue behavior of Glass/Polypropylene laminates was studied by investigating the mechanical response and damage progression in different lay-ups. The effect of ply thickness, location, and fabrication-induced morphology on fatigue response was investigated. Comparisons between detected edge cracks and internal damage state were made using microscopic analysis and through-the-width sectioning. The results showed good agreement between the measured crack density and the normalized stiffness reduction and Poisson's ratio evolution.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Engineering, Multidisciplinary
J. Sommer, M. Hajikazemi, I. De Baere, W. Van Paepegem
Summary: Quantifying microscopic damage mechanisms in opaque composite laminates with multiple off-axis plies throughout fatigue experiments is challenging. However, if successful, important relations between actual evolving damages and their contribution to the mechanical laminate response can be revealed. This study characterizes the evolution of matrix cracking in +/- 45 and 90 embedded off-axis plies together with effects of delamination and relates them to the global mechanical property reductions in Glass/Polypropylene laminates. The experimental results are compared with a modelling approach, showing good accordance.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Materials Science, Composites
Delphin Pantaloni, Anton Loic Rudolph, Darshil U. Shah, Christophe Baley, Alain Bourmaud
Summary: The study suggests that replacing glass fibers with flax fibers in thermoset composite materials can reduce ecological impact, and using a biodegradable thermoplastic matrix enables recycling and composting. Investigating the interface between flax fibers and biodegradable matrices reveals that their mechanical properties may be comparable to or better than traditional benchmarks. The adhesion between fibers and matrices plays a significant role in the performance of biocomposites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Hanumantharaya Rangaswamy, H. M. Harsha, Manjunath Patel Gowdru Chandrashekarappa, Danil Yu Pimenov, Khaled Giasin, Szymon Wojciechowski
Summary: The study investigated the effect of different proportions of multi-wall carbon nanotubes fillers on the mechanical properties of hybrid composites. It was found that compression pressure had the greatest impact on the strength of the composites, followed by mold temperature and pressure duration.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Mechanics
Justin D. Miller, Jan-Anders E. Mansson
Summary: Continuous fiber tow reinforcements in hybrid-molded composite structures have the potential to replace high production volume metal components, but further research on design variables is needed. Testing representative structures with automotive component features, different material combinations and reinforcement content were evaluated. Tow reinforcements significantly reduced warpage and showed a potential strength increase of 340% in tensile loading. However, the performance in three-point bend tests was influenced by the overmolding material, and it is recommended to use high strain to break overmolding materials to prevent premature cracking.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
Lilian Forsgren, Abhijit Venkatesh, Florian Rigoulet, Karin Sahlin-Sjovold, Gunnar Westman, Mikael Rigdahl, Antal Boldizar
Summary: The large-scale surface modification of cellulose nanocrystals (CNC) was carried out to produce CNC-containing composites using industrial-scale melt processing techniques such as twin-screw extrusion and injection moulding. Adding 10 wt% CNC led to a significant increase in yield strength and stiffness in all cases, especially for EAA-based composites.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Chemistry, Physical
Kay Schaefer, Daisy Nestler, Lothar Kroll
Summary: This paper presents an innovative thermoset sandwich material with high mechanical properties and thermal insulation. The use of reinforcement significantly improves the characteristic values of the sandwich material, and also helps to maintain these values under fatigue loading. The material was successfully applied to the floor assembly of a snow groomer, demonstrating the transferability of the manufacturing process for large-volume components with complex geometry.
Article
Materials Science, Multidisciplinary
Wenmu Yang, Wenkai Chang, Jin Zhang, Guan Heng Yeoh, Cyrille Boyer, Chun H. Wang
Summary: Waste coffee grounds can serve as a non-toxic organic flame retardant, and adjusting their particle size can significantly enhance the flame retardancy of epoxy composites, even surpassing conventional non-bio flame retardants. Additionally, fine coffee grounds can reduce the emissions of toxic gases.
MATERIALS & DESIGN
(2022)
Article
Polymer Science
Nur Farhani Ismail, Nabilah Afiqah Mohd Radzuan, Abu Bakar Sulong, Norhamidi Muhamad, Che Hassan Che Haron
Summary: The research investigates the effect of alkali treatment on kenaf fiber and composite materials, finding that alkali treatment can damage the mechanical properties of both the fiber itself and the resulting composites, leading to decreased tensile strength in the latter. The study also highlights the importance of temperature conditions on composite materials, with treated kenaf fiber showing thermal stability and lower loss values.
Article
Materials Science, Composites
Vincent Werlen, Christian Rytka, Stephanie Wegmann, Halime Philipp, Yara Khalaf, Veronique Michaud, Christian Brauner, Clemens Dransfeld
Summary: Thermoplastic compression resin transfer moulding coupled with injection moulding is an appealing process for the production of thermoplastic composites. However, its implementation at an industrial scale remains challenging. This study presents a tool and methods for an industrial scale implementation, and proves the concept by producing and characterizing composite plates with elevated fibre volume fractions and advantageous mechanical properties.
JOURNAL OF COMPOSITE MATERIALS
(2022)
Article
Mechanics
A. Salazar, A. J. Cano, J. Rodriguez
Summary: This work explores the mechanical and fatigue behavior of polyamide 12 manufactured through Selective Laser Sintering and Injection Molding. The influence of manufacturing technique and layer orientation on material properties is analyzed. Kitagawa-Takahashi diagrams are introduced for the first time in polymers to study infinite fatigue life and failure extension. Extensive experimental program is conducted to determine tensile strength, fracture behavior, fatigue life, and fatigue crack growth.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Forestry
Dan Ren, Xuexia Zhang, Zixuan Yu, Hankun Wang, Yan Yu
Summary: By separating the cell compositions in bamboo particles, the mechanical performances and water resistance of bamboo particle/polymer composites can be significantly improved. However, interface modification should be applied for higher performances of the composites.
Article
Chemistry, Multidisciplinary
Maedeh Amirmaleki, Teng Cui, Yang Zhao, Jason Tam, Anukalp Goel, Yu Sun, Xueliang Sun, Tobin Filleter
Summary: This study reveals that thin (1-11 nm) free-standing Al2O3-graphene nanolayers show remarkably long fatigue life under large mean stress levels, with films <2.2 nm thick exhibiting up to 3 orders of magnitude longer life compared to their thicker (11 nm) counterparts. The enhancement effect of graphene is prominent within a thickness of around 3.3 nm.
Article
Materials Science, Multidisciplinary
M. Sivapragash, P. Kumaradhas, B. Stanly Jones Retnam, X. Felix Joseph, U. T. S. Pillai
MATERIALS & DESIGN
(2016)
Article
Materials Science, Multidisciplinary
B. Stanly Jones Retnam, M. Sivapragash, P. Pradeep
BULLETIN OF MATERIALS SCIENCE
(2014)
Review
Materials Science, Multidisciplinary
D. Bino Prince Raja, B. Stanly Jones Retnam
BULLETIN OF MATERIALS SCIENCE
(2019)
Article
Metallurgy & Metallurgical Engineering
M. Sivapragash, P. Kumaradhas, S. C. Vettivel, B. Stanly Jones Retnam
JOURNAL OF MAGNESIUM AND ALLOYS
(2018)
