标准号：ISO 148-2-2008
实施状态：作废
中文名称：金属材料.摆锤式冲击试验.第2部分:测试机的鉴定
英文名称：Metallic materials - Charpy pendulum impact test - Part 2: Verification of testing machines
发布日期：2008-12
被替代标准：ISO 148-2-2016
代替标准：ISO 148-2-1998;ISO/FDIS 148-2-2008
采用标准：DIN EN ISO 148-2-2009,IDT;DIN EN ISO 148-2-2009,IDT;BS EN ISO 148-2-2009,IDT;EN ISO 148-2-2008,IDT;NF A03-011-2-2009,IDT;SN EN ISO 148-2-2009,IDT;OENORM EN ISO 148-2-2009,IDT;PN-EN ISO 148-2-2009,IDT;UNE-EN ISO 148-2-2010,IDT
起草单位：ISO/TC 164
标准简介：This part of ISO 148 covers the verification of the constructional elements of pendulum-type impact testing
machines. It is applicable to machines with 2 mm or 8 mm strikers used for pendulum impact tests carried out,
for instance, in accordance with ISO 148-1.
It can analogously be applied to pendulum impact testing machines of various capacities and of different
design.
Impact machines used for industrial, general or research laboratory testing of metallic materials in accordance
with this part of ISO 148 are referred to as industrial machines. Those with more stringent requirements are
referred to as reference machines. Specifications for the verification of reference machines are found in
ISO 148-3.
This part of ISO 148 describes two methods of verification.
a) The direct method, which is static in nature, involves measurement of the critical parts of the machine to
ensure that it meets the requirements of this part of ISO 148. Instruments used for the verification and
calibration are traceable to national standards. Direct methods are used when a machine is being
installed or repaired, or if the indirect method gives a non-conforming result.
b) The indirect method, which is dynamic in nature, uses reference test pieces to verify points on the
measuring scale.
A pendulum impact testing machine is not in compliance with this part of ISO 148 until it has been verified by
both the direct and indirect methods and meets the requirements of Clauses 6 and 7.
The requirements for the reference test pieces are found in ISO 148-3.
This part of ISO 148 takes into account the total energy absorbed in fracturing the test piece using an indirect
method. This total absorbed energy consists of
-the energy needed to break the test piece itself, and
-the internal energy losses of the pendulum impact testing machine performing the first half-cycle swing
from the initial position.
文件格式：PDF
文件大小：621.11KB
文件页数：46
（以上信息更新时间为：2019-11-22）
ISO 148-2-2008 金属材料.摆锤式冲击试验.第2部分_测试机的鉴定.pdf
(621.11 KB)
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