ISO 14126:2023 纤维增强塑料复合材料 面内压缩性能的测定

标准编号：ISO 14126:2023

中文名称：纤维增强塑料复合材料 面内压缩性能的测定

英文名称：Fibre-reinforced plastic composites — Determination of compressive properties in the in-plane direction

发布日期：2023-10

标准范围

本文件规定了基于热固性或热塑性基体确定纤维增强塑料复合材料在平行于层压平面的方向上的压缩性能的方法。压缩性能对于规格和质量控制目的是有意义的。测试样品由平坦的测试板或合适的成品或半成品加工而成。描述了两种加载方法和两种类型的试样。加载方法有:—？方法1:提供试样的剪切载荷（标距无支撑）—？方法2:提供样本的组合加载（标距无支撑）笔记？对于使用方法2加载的带翼试样，载荷通过端部加载和剪切加载的组合通过翼片传递。样本设计为:—？A型试样:矩形横截面，固定厚度，端部拉片（主要用于航空航天型预浸料（~0,125？mm层厚）—？B型试样:矩形横截面，厚度范围，无标签或末端标签，有两种试样尺寸可供选择（B1和B2）。A型试样用于在纤维方向上测试的单向或双轴增强材料，其中纤维通常是连续排列的或长排列的（>7.5？毫米）不连续。B1型和B2型试样用于多方向对齐；纤维结构更复杂和/或更粗糙的垫、织物和其他多向增强材料。本文件给出了检验试验方法和试样设计的组合是否导致有效失效的标准。应注意，替代测试方法/样本组合不一定会给出相同的结果。这些方法规定了样品所需的尺寸。对其他尺寸的试样或在不同条件下制备的试样进行的试验可能产生不具有可比性的结果。其他因素，如测试速度、使用的支撑夹具和样品的处理，也会影响结果。

This document specifies methods for determining the compressive properties, in directions parallel to the plane of lamination, of fibre-reinforced plastic composites, based on thermosetting or thermoplastic matrices. The compressive properties are of interest for specifications and quality-control purposes. The test specimens are machined from a flat test plate, or from suitable finished or semi-finished products.

Two loading methods and two types of specimen are described.

The loading methods are:

—     Method 1: provides shear loading of the specimen (gauge length unsupported)

—     Method 2: provides combined loading of the specimen (gauge length unsupported)

NOTE          For tabbed specimens loaded using method 2, load is transferred through a combination of end-loading and shear-loading through the tabs.

The specimen designs are:

—     Type A specimen: rectangular cross-section, fixed thickness, end-tabbed (mainly for aerospace style preimpregnates (~ 0,125 mm ply thickness)

—     Type B specimen: rectangular cross-section, range of thicknesses, untabbed or end-tabbed, two specimen sizes are available (B1 and B2).

The Type A specimen is used for unidirectionally or biaxially reinforced materials tested in the fibre direction, where the fibres are normally either aligned continuous or aligned long (>7,5 mm) discontinuous. The Type B1 and B2 specimens are used for multi-directional aligned; mat, fabric and other multi-directionally reinforced materials where the fibre structure is more complex and/or coarser.

This document gives criteria for checking that the combination of test method and specimen design result in valid failures. It is noted that alternative test method/specimen combinations will not necessarily give the same result.

The methods specify required dimensions for the specimen. Tests carried out on specimens of other dimensions, or on specimens that are prepared under different conditions, can produce results that are not comparable. Other factors, such as the speed of testing, the support fixture used and the conditioning of the specimens, can influence the results.

标准预览图