Oluschinski at 13:29, 12 December 2025

2025-12-12T13:29:27Z

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	==Terminology==		==Terminology==

	Material values (also characteristic values) represent the quantitative relationship between the material properties and the stress conditions for a particular material. A material value thus represents a numerical value with the associated physical unit of the property (see [[Material Parameter\|material parameter]]). The technical literature, especially Blumenauer [1—3], has pointed out a clear separation of the terms material value and material parameter, which has also been used in this [[Cover ~~Lexicon~~ Polymer Testing ~~and~~ Diagnostics\|Wiki-lexicon „Polymer Testing & Diagnostics“]].		Material values (also characteristic values) represent the quantitative relationship between the material properties and the stress conditions for a particular material. A material value thus represents a numerical value with the associated physical unit of the property (see [[Material Parameter\|material parameter]]). The technical literature, especially Blumenauer [1—3], has pointed out a clear separation of the terms material value and material parameter, which has also been used in this [[Cover Wiki-lexicon: Polymer Testing & Diagnostics\|Wiki-lexicon „Polymer Testing & Diagnostics“]].

	==Examples==		==Examples==

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{{Language_sel|LANG=ger|ARTIKEL=Werkstoffkennwert}}
{{PSM_Infobox}}
Material value
__FORCETOC__
==Terminology==

Material values (also characteristic values) represent the quantitative relationship between the material properties and the stress conditions for a particular material. A material value thus represents a numerical value with the associated physical unit of the property (see [[Material Parameter|material parameter]]). The technical literature, especially Blumenauer [1—3], has pointed out a clear separation of the terms material value and material parameter, which has also been used in this [[Cover Lexicon Polymer Testing and Diagnostics|Wiki-lexicon „Polymer Testing & Diagnostics“]].

==Examples==

Examples are:
{|
|• Modulus of elasticity
|Et
|=
|1250 MPa
|-
|• Tensile strength
|σM
|=
|35 MPa
|-
|• Fracture toughness
|KIC
|=
|100 MPa mm1/2 (see: [[Fracture Mechanics|fracture mechanics]])
|}

Factors influencing the property profile and thus the characteristic value level of plastics are:

''Structural parameters''
*Chain chemistry of the polymer
*Morphology
*Orientation
*Residual stress
*Additives (see: [[plastics]])

''Geometry parameters''
*Shape, dimensions
*Notches
*Joint line (binding line)
*Inhomogeneities (micropore, vacuole and hole formation plastics)

''Stress parameters''
*Stress type (strain rates applications, fatigue and stress corrosion cracking)
*Stress duration (creep behavior in creep tensile test and Rockwell hardness)
*Stress frequency
*Stress rate
*Temperature
*Ambient media, environment

Material properties can only be determined in a reproducible manner if they are based on comparable chemical and physical structures, the same geometric conditions and the same test method or the same test conditions.

'''References'''

{|
|-valign="top"
|[1]
|[[Blumenauer,_Horst|Blumenauer, H.]]: Werkstoffprüfung. Deutscher Verlag für Grundstoffindustrie Leipzig, 2nd edition (1978) ISBN:VLN 152-915/46/79 (see [[AMK-Büchersammlung|AMK-Library]] under M 1)
|-valign="top"
|[2]
|Blumenauer, H.: Werkstoffprüfung. Deutscher Verlag für Grundstoffindustrie Leipzig, 4th edition (1984), ISBN VLN 152-915/104/87 see [[AMK-Büchersammlung|AMK-Library]] under M 2)
|-valign="top"
|[3]
|Blumenauer, H.: Werkstoffprüfung. Deutscher Verlag für Grundstoffindustrie Leipzig Stuttgart, 6th edition (1994); ISBN 978-3-342-00547-6 (see [[AMK-Büchersammlung|AMK-Library]] under M 3).
|}

[[Category:Measurement Testing Technology]]
[[Category:Materials Science_Materials Engineering]]

Material Value - Revision history

Oluschinski at 13:29, 12 December 2025