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What are the common bending test applications and test standards?

Abstract: 本文概述了弯曲测试的基本原理、应用及相关标准。弯曲试验通过在样品中点施加变形力，使其形成凹面或弯曲，主要用于评估材料的延展性和抗断裂性。与拉伸、压缩和疲劳试验类似，弯曲测试可以应用于金属、聚合物、塑料等各种材料。测试常用于片材、条材、棒材等形状的样品，特别是具有高延展性的材料。常见应用包括硅片材料、木制品、电子产品、金属焊缝等。文章列出了多种相关标准，如ASTM A370（钢产品机械测试）、ASTM C1018（纤维增强混凝土的弯曲韧性）、ASTM D790（塑料弯曲性能测试）及ISO 7438（金属材料弯曲试验），为弯曲测试提供了规范和指导。

Bending test

A bend test deforms a test material at a midpoint, resulting in a concave surface or a bend without breaking, and is often used to determine a material's ductility or fracture resistance. Instead of loading a material until it fails, a bend test deforms a sample into a specific shape. Bend testing is as popular as tensile testing, compression testing, and fatigue testing.

Typically, bend testing is performed on metals or metallic materials, but can be applied to any substance that can undergo plastic deformation, such as polymers and plastics. These materials can take any workable shape, but when used for bend testing, sheets, bars, rods, shells, and tubes are common. Bend tests are generally used for materials with acceptably high ductility.

What are some common bend testing applications?

  • Isometric Bending Test of Silicon Wafer | Tensile Testing Machine

  • Three-point bending fixture for bending test of wood products | Tensile testing machine

  • Flexibility Bending Test for Electronic Products | Tensile Testing Machine

  • Metal Seam Guided Bend Testing | Tensile Testing Machines

  • Metal Ductility Bending Test | Tensile Testing Machine

  • Weld Ductility Bending Test | Tensile Testing Machine

  • Weld Strength Testing Using Guided Bending and Tensile Grips | Tensile Testing Machines

  • Static Bending Test of Wood Products | ASTM D1037

  • Wood Static Bending Test | ASTM D143

What are the common bending test standards?

  • ASTM A370 Test Methods and Definitions for Mechanical Testing of Steel Products

  • ASTM C1018 Flexural Toughness and First Crack Strength of Fiber Reinforced Concrete

  • ASTM C1161 Flexural Strength of Advanced Ceramics at Ambient Temperature

  • ASTM C1499 Monotonic Equibiaxial Flexural Strength of Advanced Ceramics at Ambient Temperature

  • ASTM C158 Test Method for Flexural Strength of Glass

  • ASTM C393 Test Method for Determination of Core Shear Properties of Sandwich Structures by Beam Bending

  • ASTM C580 Test Method for Flexural Strength and Modulus of Elasticity of Chemically Resistant Mortars, Grouts, Monolithic Pavements, and Polymer Concrete

  • ASTM C947 Test Method for Flexural Properties of Thin Section Glass Fiber Reinforced Concrete

  • ASTM D143 Test Method for Small Transparent Wood Specimens

  • ASTM D2344 Short-beam strength of polymer matrix composites and their laminates

  • ASTM D6272 Four-Point Bending Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials

  • ASTM D7249 Test Method for Surface Performance of Long Beam Bending Sandwich Structures

  • ASTM D747 Measurement of Apparent Flexural Modulus of Plastics by Cantilever Beam

  • ASTM D7774 Test Method for Flexural Fatigue Properties of Plastics

  • ASTM D790 Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials

  • ASTM F394 Standard Specification for Steel Transmission Tower Bolts, Galvanized and Bare

  • ISO 6872 Dentistry – Ceramic materials (contains Amendment A1:2018)

  • ISO 7438 Metallic materials - Bend test

  • IPC JEDEC 9702 Monotonic Bend Test Interconnects - Board Level

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