Material Value: Difference between revisions
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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 [[ | 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 [[Start page|Wiki-lexicon „Polymer Testing & Diagnostics“]]. | ||
==Examples== | ==Examples== | ||
| Line 52: | Line 52: | ||
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. | 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" | |-valign="top" | ||
|[1] | |[1] | ||
|[[Blumenauer,_Horst|Blumenauer, H.]]: Werkstoffprüfung. Deutscher Verlag für Grundstoffindustrie Leipzig, 2nd edition (1978) ISBN:VLN 152-915/46/79 (see [[ | |[[Blumenauer,_Horst|Blumenauer, H.]]: Werkstoffprüfung. Deutscher Verlag für Grundstoffindustrie Leipzig, 2nd edition (1978) ISBN:VLN 152-915/46/79 (see [[AMK-Library]] under M 1) | ||
|-valign="top" | |-valign="top" | ||
|[2] | |[2] | ||
|Blumenauer, H.: Werkstoffprüfung. Deutscher Verlag für Grundstoffindustrie Leipzig, 4th edition (1984), ISBN VLN 152-915/104/87 see [[ | |Blumenauer, H.: Werkstoffprüfung. Deutscher Verlag für Grundstoffindustrie Leipzig, 4th edition (1984), ISBN VLN 152-915/104/87 see [[AMK-Library]] under M 2) | ||
|-valign="top" | |-valign="top" | ||
|[3] | |[3] | ||
|Blumenauer, H.: Werkstoffprüfung. Deutscher Verlag für Grundstoffindustrie Leipzig Stuttgart, 6th edition (1994); ISBN 978-3-342-00547-6 (see [[ | |Blumenauer, H.: Werkstoffprüfung. Deutscher Verlag für Grundstoffindustrie Leipzig Stuttgart, 6th edition (1994); ISBN 978-3-342-00547-6 (see [[AMK-Library]] under M 3). | ||
|} | |} | ||
[[Category:Measurement Testing Technology]] | [[Category:Measurement Testing Technology]] | ||
[[Category:Materials Science_Materials Engineering]] | [[Category:Materials Science_Materials Engineering]] | ||
Latest revision as of 10:34, 4 September 2026
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Material value
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). 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 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) |
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
| [1] | Blumenauer, H.: Werkstoffprüfung. Deutscher Verlag für Grundstoffindustrie Leipzig, 2nd edition (1978) ISBN:VLN 152-915/46/79 (see AMK-Library under M 1) |
| [2] | Blumenauer, H.: Werkstoffprüfung. Deutscher Verlag für Grundstoffindustrie Leipzig, 4th edition (1984), ISBN VLN 152-915/104/87 see AMK-Library under M 2) |
| [3] | Blumenauer, H.: Werkstoffprüfung. Deutscher Verlag für Grundstoffindustrie Leipzig Stuttgart, 6th edition (1994); ISBN 978-3-342-00547-6 (see AMK-Library under M 3). |