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plastics tensile fracture strong/high degree how to testing? （ inner 附142 types plastics tensile fracture strong/high degree value table/sheet ）
fracture tensile strength plastics in most fracture front can 承受 应 force large small. this value for is material tensile method 恢复 临界点, 此时材 material from elastic property deformation is property deformation.
understanding this property can non mono pure 关注数字, is is 掌握材 material in application in performance. modified plastics manufacturing through analysis property can, can in balanced cost and combined requirements front lower, design more safety, more solid, more can 靠 材 material. 简而言之, tensile strength testing has forecast plastics in pressure lower is, ensure its meet/satisfy lower high requirements application 场景.
selection combined polymer, need understanding its strong/high degree features. guide will belt/tape understanding how to plastics industry commonly used type polymer fracture tensile strength, 助你自信做出材 material selection.
tensile strength: concept, mono and type type
tensile strength 定义
tensile strength is plastics material in 不失效 front lower, can most large force. this type of force generate material by tensile process in, is material from elastic property deformation toward property deformation 转变 临界点.
当应 force understanding remove 时, plastics material 会经历 below/following types deformation:
elastic property deformation: 材 material 会恢复原始 dimensions, this type of deformation tool has can property and non property, suitable for small 应变情况.
塑 property deformation: 材 material method 恢复原始 dimensions, this type of process tool has property and can property.
tensile strength mono 位
tensile strength amount mono is mono 位横截面积 承受 force. in mono made in, tensile strength mono 位包括:
帕斯卡（Pa）
兆帕（MPa）
吉帕（GPa）
in USA, is 方便测 amount, commonly used tensile strength mono 位包括:
磅 force / 平方英寸（lbf/in² or psi）
千磅 force / 平方英寸（kpsi）
tensile strength types type type
tensile strength main/primary separation is type:
屈服 strong/high degree （A）: material in 不发生永久 deformation front lower can 承受 应 force. understanding more more tensile strength related inner 容 »
极限 strong/high degree （B）: material can most large force.
fracture strong/high degree （C）: force - 应变曲线 upper fracture for 应 应 force 坐标.
应 force -应变曲线显示 屈服点 (A), strong/high degree (B) and fracture (C) resistant strong/high degree
换句话说, material 首先发生 elastic property 形变——当应 force 释放时, it 们会恢复 to 原 形状. rear, in more large force function lower, it 们会发生塑 property 形变, this is 屈服——当应 force 释放时, it already by tensile formed new 形状. most rear, it 们会发生 fracture; this most 终归结 is tensile force or fracture 点.
resistant strong/high degree usually by is resistant strong/high degree.
what is fracture tensile strength?
fracture tensile strength （TS）衡 amount is plastics Sample in tensile process in, fracture front can most large force. separation material 会发生脆 property fracture, fracture process relatively is 突然; 另一 材 material in fracture front deformation or long. strong/high degree make material fracture 需 拉应 force or pressure force is amount standards, by is fracture strong/high degree.
therefore, it is below/following in important force property can indicators:
材 material assessment
quality control
structure design
建模 analysis
失效 analysis
应 force - 应变曲线 how to amount tensile strength?
当 material to tensile force function 时, 会发生伸 long deformation. in elastic property deformation 区域, can through force - 应变曲线获取材 material force is, this 一规律 by is 胡克定律. force generate long amount 取决于 plastics material and material dimensions.
应 force 定义
应 force plastics mono 位面积 upper force, mono is 牛 / 平方米（N/m²） or 帕斯卡（Pa）.
公式: σ = F/A its in:
σ 代 table/sheet force
F table/sheet function force
A table/sheet Sample 横截面积
应变 定义
应变指 mono long degree long amount, due to is long degree ratio value, 应变无 mono 位.
公式: ε = ΔL/L₀; ΔL = L-L₀ its in:
ε 代 table/sheet 应变
L₀ 代 table/sheet by tensile rod 材 原始 long degree
L table/sheet tensile rear long degree
ΔL table/sheet rod 材 伸 long amount, upper types long degree value
测 amount plastics tensile property can testing methods has which?
generally 说, “ tensile experiment/testing methods ” used for amount material elastic property modulus.
commonly used methods has:
ASTM D638 - plastics tensile property can standards experiment/testing methods.
ISO 527-1:2012 - tensile property can 测定.
this methods used for plastics and plastics composite/compounding material tensile property can. is in conditions lower 进行, this conditions 包括:
预处理
temperature degree
wet degree
machine speed degree
测 Sample product standards 哑铃形.
for/regarding ASTM D638 standards, testing speed degree material specification 决定. for/regarding ISO 527 standards, strong/high degree and elongation testing speed degree usually is 5 or 50 mm/min, modulus testing speed degree usually is 1 mm/min.
plastics tensile fracture strong/high degree value
