ISO/TS 19096:2023 PDF

Metallic materials — Instrumented indentation test for hardness and materials parameters — Evaluation of stress change using indentation force differences

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ISO/TS 19096:2023

Metallic materials — Instrumented indentation test for hardness and materials parameters — Evaluation of stress change using indentation force differences

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 19
Дата публикации:: 15 ноября 2023 г.
Издание:: ISO TS 19096 edition 1 version 1
ICS:: 77.040.10

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Описание (английский):

This document specifies the method of instrumented indentation test for evaluation of stress change between reference and target states using indentation force differences. This document primarily applies to measuring the stress change in a specific location and the stress difference between different locations.

Технические детали

Технический комитет: ISO/TC 164/SC 3 - Hardness testing
SKU: ISO/TS 19096:2023

Abstract

Overview

ISO/TS 19096:2023 - Metallic materials - Instrumented indentation test for hardness and materials parameters - Evaluation of stress change using indentation force differences - specifies a method to evaluate stress change between a reference and a target state by comparing instrumented indentation force–displacement responses. The technique is aimed at near-surface, plane-stress measurements on metallic materials and is intended for point measurements and comparative mapping across locations.

Key topics and requirements

Principle: Stress changes shift the instrumented indentation force/indentation-depth curve. The standard quantifies stress change from the force difference between reference and target curves (constant-depth or constant-load approaches).
Scope of measurement: Primarily measures average near-surface stress change in the plane of the surface (the method yields the change equal to half the first invariant of the stress tensor when normal stress is zero).
Test equipment & calibration: Uses instrumented indentation systems complying with ISO 14577 series requirements (machine verification and calibration).
Test piece and procedure: Specifies sample selection, acquisition of reference and target states, indentation arrays (1D or 2D) and procedures for controlling local hardness variations (see Annex A).
Data processing: Calculation of projected areas, force differences, and average stress change; guidance on uncertainty estimation (ISO/IEC Guide 98-3 referenced).
Verification and combination methods: Includes normative and informative annexes for hardness uniformity verification (A), combining with stress relief methods (B), Knoop indenter usage (C), verification by bending specimens (D), and comparison with hole‑drilling/saw‑cutting (E).

Practical applications

Rapid semi‑destructive evaluation of residual/stress change after processes such as heat treatment, welding, forming, shot peening, coating and surface modification.
Localized stress mapping (1D/2D indentation arrays) to identify regions of tensile or compressive change.
In-field quality control where minimal surface preparation and fast point measurements (

Overview

Key topics and requirements

Principle: Stress changes shift the instrumented indentation force/indentation-depth curve. The standard quantifies stress change from the force difference between reference and target curves (constant-depth or constant-load approaches).
Scope of measurement: Primarily measures average near-surface stress change in the plane of the surface (the method yields the change equal to half the first invariant of the stress tensor when normal stress is zero).
Test equipment & calibration: Uses instrumented indentation systems complying with ISO 14577 series requirements (machine verification and calibration).
Test piece and procedure: Specifies sample selection, acquisition of reference and target states, indentation arrays (1D or 2D) and procedures for controlling local hardness variations (see Annex A).
Data processing: Calculation of projected areas, force differences, and average stress change; guidance on uncertainty estimation (ISO/IEC Guide 98-3 referenced).
Verification and combination methods: Includes normative and informative annexes for hardness uniformity verification (A), combining with stress relief methods (B), Knoop indenter usage (C), verification by bending specimens (D), and comparison with hole‑drilling/saw‑cutting (E).

Practical applications

Rapid semi‑destructive evaluation of residual/stress change after processes such as heat treatment, welding, forming, shot peening, coating and surface modification.
Localized stress mapping (1D/2D indentation arrays) to identify regions of tensile or compressive change.
In-field quality control where minimal surface preparation and fast point measurements (

ISO/TS 19096:2023 PDF

Технические детали

Abstract

Overview

Key topics and requirements

Practical applications

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Abstract

Overview

Key topics and requirements

Practical applications

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