Flexural strength

About: Flexural strength is a research topic. Over the lifetime, 52123 publications have been published within this topic receiving 846504 citations. The topic is also known as: bending strength & modulus of rupture.

Enhanced properties of lignin-based biodegradable polymer composites using injection moulding process

Abstract: Composites from polybutylene succinate (PBS) and lignin-based natural material were fabricated using a melt mixing process. The effects of lignin material and polymeric methylene diphenyl diisocyanate (PMDI) compatibilizer on the properties of composites were investigated. Incorporation of 65% lignin material into PBS was achieved with an improvement in the tensile and flexural properties of composites. Incorporation of 1% PMDI in 50% lignin filled composites enhanced the tensile, flexural and impact strength simultaneously. Heat deflection temperature (HDT) of the virgin plastic also increased with lignin and PMDI incorporation. Improved interfacial adhesion was observed from SEM micrographs of the compatibilized composites.

Cracking mechanisms in durable sisal fiber reinforced cement composites

Abstract: Fiber reinforced cement composite laminates with long sisal fibers were manufactured using a cast hand lay up technique. A matrix with partial cement replacement by metakaolin and calcined waste crushed clay brick was used in order to improve the durability aspects. Mechanical response was measured under tension and bending tests while crack formation was investigated using a high resolution image capturing procedure. Crack spacing was measured using image analysis and correlated with the applied strain under both the tensile and bending response. Various stages of loading corresponding to initiation, propagation, distribution, opening, and localization of a crack system in the specimen are discussed. The effect of flexural cracking on the location of neutral axis during the bending tests was measured using strain-gages.

Experimental Study on Steel Shear Wall with Slits

Abstract: A new type of earthquake-resisting element, consisting of a steel plate shear wall with vertical slits, is introduced. In this system, the steel plate segments between the slits behave as a series of flexural links, which provide a fairly ductile response without the need for heavy stiffening of the wall. Test results are presented for 42 wall plate specimens of roughly one-third of full scale, which were subjected to static monotonic and cyclic lateral loading. These tests provide data on general behavior of the walls, which provides the basis for models to calculate the wall strength and stiffness and design the out-of-plane stiffening. When properly detailed and fabricated to avoid premature failure due to tearing or out-of-plane buckling, the wall panels respond in a ductile manner, with a concentration of inelastic action at the top and bottom of the flexural links. The test data indicate that limiting the width-to-thickness ratio to less than 20 in the flexural links will ensure that the walls can sustain roughly 3% drift without substantial hysteretic degradation.