Oluschinski at 05:23, 15 December 2025

2025-12-15T05:23:05Z

← Older revision		Revision as of 07:23, 15 December 2025
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	* [[Measurement Deviation\|Measurement deviation]]		* [[Measurement Deviation\|Measurement deviation]]
	* [[Measuring Accuracy\|Measuring accuracy]]		* [[Measuring Accuracy\|Measuring accuracy]]
	* [[Measured Value ~~Accurancy~~\|Measured value ~~accurancy~~]]		* [[Measured Value Accuracy\|Measured value accuracy]]
	* [[Crack Opening\|Crack opening]]		* [[Crack Opening\|Crack opening]]

	[[category:Measurement Testing Technology]]		[[category:Measurement Testing Technology]]

Oluschinski: Created page with "{{Language_sel|LANG=ger|ARTIKEL=Messgröße}} {{PSM_Infobox}} Measuring variable FORCETOC A measured variable is a physical quantity that is determined by a measurement process. Typical physical measured variables include force, length, mass, temperature, time, etc. The value of the measured variable obtained from a measuring device is referred to as the measured value; it is formed from a nu..."

2025-12-03T12:01:59Z

Created page with "{{Language_sel|LANG=ger|ARTIKEL=Messgröße}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Measuring variable</span> __FORCETOC__ A measured variable is a physical quantity that is determined by a measurement process. Typical physical measured variables include force, length, mass, temperature, time, etc. The value of the measured variable obtained from a measuring device is referred to as the measured value; it is formed from a nu..."

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{{Language_sel|LANG=ger|ARTIKEL=Messgröße}}
{{PSM_Infobox}}
<span style="font-size:1.2em;font-weight:bold;">Measuring variable</span>
__FORCETOC__

A measured variable is a physical quantity that is determined by a measurement process. Typical physical measured variables include force, length, mass, temperature, time, etc.

The value of the measured variable obtained from a measuring device is referred to as the [[Measured Value|measured value]]; it is formed from a numerical value and the physical unit.

Characteristic measured variables in technical [[Fracture Mechanics|fracture mechanics]] are, for example, the '''impact load''' (force) determined by [[Strain Gauge|strain gauges]] in the [[Instrumented Charpy Impact Test|instrumented Charpy impact test (ICIT)]] or the '''deflection''' determined by a photo-optical displacement measuring device. When determining [[Material Value|characteristic values]] in [[Quasi-static Test Methods|quasi-static]] fracture mechanics tests, [[Compact Tension (CT) Specimen|CT test specimens]] are used to [[Measure|measure]] not only the fracture load but also the '''displacement''' of the point of application of the load in the line of action of the load and the '''notch widening''' (see [[Crack Opening|crack opening]]), which are often measured using [[Laser Extensometry|laser optical device systems]].

The measured variable does not have to be the direct subject of the measurement. It can also be determined using physically defined mathematical relationships between variables that are subject to direct measurement, e.g. [[Velocity|velocity]]. The aim of every measurement is to determine the true value of the measured variable. A distinction is made between dimensioned and dimensionless measured variables:

* Dimensional measured variables: load (force) in newtons, time in seconds, mass in kilograms
* Dimensionless measured variables: angle, index of refraction
* DIN 1319: Fundamentals of Metrology
** Part 1 (1995-01): Basic Terminology
** Part 2 (2005-10): Terminology related to Measuring Equipment
** Part 3 (1996-05): Evaluation of Measurements of a Single Measurand, Measurement Uncertainty
** Part 4 (1999-02): Evaluation of Measurements – Uncertainty of Measurement

'''See also'''

* [[Measure]]
* [[Measured Value|Measured value]]
* [[Measurement Deviation|Measurement deviation]]
* [[Measuring Accuracy|Measuring accuracy]]
* [[Measured Value Accurancy|Measured value accurancy]]
* [[Crack Opening|Crack opening]]

[[category:Measurement Testing Technology]]

Measured Variable - Revision history

Oluschinski at 05:23, 15 December 2025