ISO 4965-2:2012 PDF

Metallic materials — Dynamic force calibration for uniaxial fatigue testing — Part 2: Dynamic calibration device (DCD) instrumentation

Название (английский):

ISO 4965-2:2012

Metallic materials — Dynamic force calibration for uniaxial fatigue testing — Part 2: Dynamic calibration device (DCD) instrumentation

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 9
Дата публикации:: 6 июля 2012 г.
Издание:: ISO IS 4965 edition 1 version 1
ICS:: 77.040.10

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Описание (английский):

In order to perform a dynamic calibration of a uniaxial testing system, it is necessary to measure the forces experienced by the test-piece to known levels of accuracy; this measurement is made by a dynamic calibration device (DCD) in place of the test-piece and the calibration method is described in ISO 4965-1. ISO 4965-2:2012 defines the calibration procedure for the DCD's instrumentation. The method for the analysis of the results is also described, leading to a range of testing frequencies over which the instrumentation is valid for use with DCDs in accordance with ISO 4965-1.

Технические детали

Технический комитет: ISO/TC 164/SC 4 - Fatigue, fracture and toughness testing
SKU: ISO 4965-2:2012

Abstract

Overview

ISO 4965-2:2012 specifies the calibration procedure and instrumentation requirements for a Dynamic Calibration Device (DCD) used to measure forces in uniaxial fatigue testing. This part of ISO 4965 defines how to calibrate the DCD’s strain‑gauge bridge output conditioning and display electronics so that dynamic force measurements are traceable, accurate and valid over a defined frequency range. It complements ISO 4965-1, which describes the testing‑system calibration method using a calibrated DCD.

Key topics and technical requirements

Scope and purpose: Calibration of DCD instrumentation to ensure accurate force measurement during dynamic (cyclic) uniaxial fatigue tests.
Environmental requirement: Calibration performed at 18 °C to 28 °C (actual temperature reported in the report).
DCD instrumentation: Reads/display DCD output as mV or mV/V; resolution must be ≤ 0.0001 mV/V.
Dynamic voltage reference standard: Generates DC and sinusoidal waveforms (with configurable amplitude, frequency, DC offset and added harmonic distortion), traceable to national standards.
- Expanded uncertainty of generated peak/valley voltages: ≤ 0.2% of the voltage range.
- Example DC capability: for 10 V excitation, generate −20 mV to +20 mV with ≈20 µV uncertainty.
- Output‑impedance mismatch between reference and DCD to be

Overview

Key topics and technical requirements

Scope and purpose: Calibration of DCD instrumentation to ensure accurate force measurement during dynamic (cyclic) uniaxial fatigue tests.
Environmental requirement: Calibration performed at 18 °C to 28 °C (actual temperature reported in the report).
DCD instrumentation: Reads/display DCD output as mV or mV/V; resolution must be ≤ 0.0001 mV/V.
Dynamic voltage reference standard: Generates DC and sinusoidal waveforms (with configurable amplitude, frequency, DC offset and added harmonic distortion), traceable to national standards.
- Expanded uncertainty of generated peak/valley voltages: ≤ 0.2% of the voltage range.
- Example DC capability: for 10 V excitation, generate −20 mV to +20 mV with ≈20 µV uncertainty.
- Output‑impedance mismatch between reference and DCD to be

ISO 4965-2:2012 PDF

Технические детали

Abstract

Overview

Key topics and technical requirements

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Abstract

Overview

Key topics and technical requirements

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