Bend Test 弯曲测试
弯曲试验使测试材料在中点变形，导致凹面或弯曲的形成而不发生断裂，通常用于确定该材料的延展性或抗断裂性。弯曲试验不是对材料进行加载直至失效，而是将样品变形为一个特定的形状。
一般来说，弯曲试验是在金属或金属材料上进行的，但也可以适用于任何可以经历塑性变形的物质，如聚合物和塑料。这些材料可以有任何可行的形状，但当用于弯曲试验时，最常见的是片状、条状、棒状、壳状和管状。弯曲测试机通常用于具有可接受的高延展性的材料。
常见的弯曲测试分类
• 硅片材料的等轴弯曲测试
• 三点弯曲夹具的木制品弯曲测试
• 电子产品的柔性弯曲测试
• 金属焊缝的引导性弯曲测试
• 金属延展性弯曲测试
• 焊缝延展性弯曲测试
• 使用导引弯曲和拉伸夹具的焊接强度测试|设备
• 木质产品静态弯曲测试 | ASTM D1037
• 木材静态弯曲测试 | ASTM D143
常见的弯曲性能测试标准
• ASTM A370 Test Method 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 Methods for Strength of Glass by Flexure
• ASTM C393 Test Method for Core Shear Properties of Sandwich Constructions by Beam Flexure
• ASTM C580 Test Method for Flexural Strength and Modulus of Elasticity of ChemicalResistant Mortars, Grouts, Monolithic Surfacings, and Polymer Concretes
• ASTM C947 Test Method for Flexural Properties of Thin-Section Glass-Fiber-Reinforced Concrete
• ASTM D143 Test Methods for Small Clear Specimens of Timber
• ASTM D2344 Short-Beam Strength of Polymer Matrix Composite Materials and Their Laminates
• ASTM D6272 Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials by Four-Point Bending
• ASTM D7249 Test Method for Facing Properties of Sandwich Constructions by Long Beam Flexure
• ASTM D747 Apparent Bending Modulus of Plastics by Means of a Cantilever Beam
• ASTM D7774 Test Method for Flexural Fatigue Properties of Plastics
• ASTM D790 Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials
• ASTM F394 Standard Specification for Steel Transmission Tower Bolts, Zinc-Coated and Bare
• ISO 6872 Dentistry – Ceramic materials (Incorporates Amendment A1: 2018)
• ISO 7438 Metallic materials – Bend test
• IPC JEDEC 9702 Monotonic Bend Testing Interconnects – Board Level
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