Test Background
The bending performance test of sandwich structural materials can determine the apparent bending strength and apparent bending modulus when the sandwich structure is subjected to bending, the bending stiffness and shear stiffness of the sandwich structure, the stress and elastic modulus of the sandwich structure panels, the shear stress and shear modulus of the sandwich structure core, and is also suitable for measuring the bending adhesive layer strength between the sandwich structure panels and the core.
Zhongke Testing Reliability Experiment Center has the capability of reliability testing of various sandwich structures and provides professional bending performance testing services for sandwich structures.
Scope of tests
sandwich structure dashboard include aluminum alloy, stainless steel, titanium alloy and various composite materials.
Sandwich materials include lightweight wood, foam plastic, etc. Metal materials or composite materials can also be used to make corrugated board sandwich or honeycomb sandwich (see honeycomb structure).
Test method
The tensile and compressive strength of the panel is measured through three-point bending of the long beam specimen of the sandwich structure. The shear strength of the core is measured by the three-point bending of the short beam specimen of the sandwich structure. The bending stiffness and shear stiffness are measured by the three-point bending of the outstretched beam of the long beam specimen of the sandwich structure, thereby measuring the elastic modulus of the panel and the shear modulus of the core.
Test standard:
GB/T 1456-2021 Test method for bending performance of sandwich structures
GB/T 1446 General principles for performance test methods of fiber reinforced plastics
GB/T 3356-2014 Test method for flexural properties of directional fiber reinforced polymer matrix composites
GB/T 3961 Fiber reinforced plastic terminology
