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Thermo Polymer Matrix–Based Natural Fiber Composite
Published in Shishir Sinha, G. L. Devnani, Natural Fiber Composites, 2022
Manan Tyagi, G. L. Devnani, Raj Verma
The test that is used to analyze flexural properties of composites is a three-point bending test. In this test, tested material is bent at a preset span until it is fractured and the speed of bending is also preset. Due to this, compressive force acts on the upper surface of the specimen and the lower surface is subjected to tensile forces (Dong et al., 2012). The crucial parameters that determine the flexural strength are fibers waviness, mold temperature, stacking sequence, and fiber orientation (Azzam & Li, 2014). Void space and the magnitude of fiber loading also impact flexural properties (Hagstrand et al., 2005; Khan et al., 2018; Mahmud Zuhudi et al., 2016).
Assessment of the durability of marble cladding by laboratory exposure compared to natural exposure
Published in J. Carmeliet, H. Hens, G. Vermeir, Research in Building Physics, 2020
K.K. Hansen, H. Leksø, B. Grelk
A four-point bending test is used to determine the flexural strength. The mean value of the flexural strength of the specimen series is defined as the flexural strength of the stone. The results are shown in Figure 3.
Investigation on the Effect of Flexural, Flammability and Acoustic Properties on Human Hair Reinforced Epoxy Composites
Published in P. C. Thomas, Vishal John Mathai, Geevarghese Titus, Emerging Technologies for Sustainability, 2020
Jintu Thomas, Joel James, John Bosco Gomes, Tharun Thomas, K. Jessy, Vishal John Mathai
The tear strength of composites with varying fiber lengths is shown in Table 87.1. Three-point bending test was used to obtain the flexural strength. It is found that flexural strength is maximum for composite having fiber length of 20 mm.i.e. With increase in fiber length, flexural strength increases.
Effect of graphene on the properties of flax fabric reinforced epoxy composites
Published in Advanced Composite Materials, 2020
M. Kamaraj, E. Anush Dodson, Shubhabrata Datta
Flexural testing measures the force needed to bend a plastic material and defines a material’s resistance to flexing and rigidity. Flexural strength is the physical calculation of a material’s maximum load-carrying capacity without any permanent deformation. Flexural strength helps in the design of beams, cantilevers, shafts, etc. The flexural strength was determined in accordance with the ASTM D790 standard by three-point bend testing in the universal tensile testing machine. Figure 5 shows the shape and size of test specimens made from the composite laminate produced. The test specimens were carefully placed on the support bars to ensure symmetry of the load and level of the sample. The support span was set at 60 mm to match the 15:1 ratio of span to depth. Three experimental tests were conducted at a crosshead speed of 2 mm/min for each type of composite and the average values were reported. The flexural strength and modulus were evaluated using the following Equations (5) and (6)
Experimental investigation of morphological and mechanical properties of SiC-neem-coir fiber reinforced hybrid composite
Published in Journal of the Chinese Institute of Engineers, 2022
R Pandiyarajan, Starvin M, Belsam Jeba Ananth M, Marimuthu S, Sabarish S, S Ponsuriyaprakash
The specimens for the flexural test were prepared by following the ASTM D790 standard. The test to measure the flexural strength of the material specimen was the commonly used three-point flexure test (Khan et al. 2021). The present work used a universal testing machine for this purpose and to measure the crosshead position of the specimen deflection in the meantime. During testing, the force was applied on the specimen until its fracture. The test results included the flexural strength and displacement of the composite materials. The tests were performed under standard environment conditions of room temperature of 25°C and humidity of 50%.
Mechanical and microstructural properties of recycled reactive powder concrete containing waste glass powder and fly ash at standard curing
Published in Cogent Engineering, 2018
Belachew Asteray Demiss, Walter Odhiambo Oyawa, Stanley Muse Shitote
The other mechanical strength evaluation for the developed RRPC in this study was performance evaluation by flexural strength of beams. According to dictionary of construction, flexural strength is defined as a property of a material or structural member that indicates its ability to resist failure in bending. Figure 5 shows the flexural strength of RRPC beams with different percentages of fly ash and finely dispersed glass powder. Accordingly, a maximum flexural strength 8.8 MPa was observed using Mix 2. Compared to the reference, 30.58% was improved using the series.