ISO 14577-2:2015
Metallic materials — Instrumented indentation test for hardness and materials parameters — Part 2: Verification and calibration of testing machines
Metallic materials — Instrumented indentation test for hardness and materials parameters — Part 2: Verification and calibration of testing machines
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 25
- Дата публикации:
- 8 июля 2015 г.
- Издание:
- ISO IS 14577 edition 2 version 1
- ICS:
- 77.040.10
ISO 14577-2:2015 specifies the method of verification and calibration of testing machines for carrying out the instrumented indentation test in accordance with ISO 14577‑1:2015. It describes a direct verification method for checking the main functions of the testing machine and an indirect verification method suitable for the determination of the repeatability of the testing machine. There is a requirement that the indirect method be used in addition to the direct method and for the periodic routine checking of the testing machine in service. It is a requirement that the indirect method of verification of the testing machine be carried out independently for each test method. ISO 14577-2:2015 is also applicable for transportable testing machines.
Abstract
Overview
ISO 14577-2:2015 - "Metallic materials - Instrumented indentation test for hardness and materials parameters - Part 2: Verification and calibration of testing machines" - defines how to verify and calibrate machines used for instrumented indentation testing (IIT). It complements ISO 14577-1 (test method) by specifying both direct and indirect verification procedures to ensure accurate measurement of force, displacement, indenter geometry and machine compliance. The standard also applies to transportable testing machines and requires routine and method‑specific checks for reliable hardness and material-parameter data.
Key topics and technical requirements
- Direct verification and calibration (performed at stable temperature, typically 10–35 °C; preferably 23 ± 5 °C):
- Test force calibration: Each force range must be calibrated over its full range with a minimum of 16 evenly distributed points during both application and removal; procedures repeated at least three times. Tolerances: typically ±1 % for forces ≥0.001 N (nano range ±1 % recommended) and ±2.5 % for forces
Технические детали
- Технический комитет
- ISO/TC 164/SC 3 - Hardness testing
- SKU
- ISO 14577-2:2015
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