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Show new changes starting from 08:43, 5 December 2025

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3 December 2025

N 13:50

Poisson's Ratio diffhist +5,365 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Poissonzahl}} {{PSM_Infobox}} Poisson's ratio or Traverse contraction __FORCETOC__ ==Definition of Poisson´s ratio== Assuming a slender round test specimen which is in the plane stress state, a measurable reduction in cross-section Δ''d'' occurs in addition to the elongation Δ''l'' of the test specimen during tensile loading as a result of volume constanc...")

N 13:49

Plastics diffhist +4,515 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Kunststoffe}} {{PSM_Infobox}} Plastics __FORCETOC__ ==Definition== The term ‘plastics’ refers to synthetic organic materials that contain '''macromolecules''' as essential components [1]. All natural materials (rubber, protein, cellulose) and plastics contain molecules as their smallest particles, which in turn consist of a large number of atoms. The term ‘macromolecule’ tak...")

N 12:59

Material Value diffhist +2,657 Oluschinski talk contribs (Created page with "{{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 p...")

N 12:59

Material & Werkstoff diffhist +9,285 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Werkstoff & Material}} {{PSM_Infobox}} Material & Werkstoff __FORCETOC__ ==Terminology== The targeted use of materials such as wood and bone, stone, glass/ceramics and metals as well as polymer materials, composite materials and material composites has been taking place for thousands of years. Materials have shaped entire epochs in the development of civilization, so i...")

N 12:59

Material Testing Machine diffhist +5,024 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Materialprüfmaschine}} {{PSM_Infobox}} Material testing machine __FORCETOC__ ==General information== Materials testing machines, synonymously also referred to as universal testing machines (UTM), also known as tensile testing machines and simplified universal tester or testing machines, are used to determine physical (mechanical) material properties in materials testing, plastics te...")

N 12:58

Material Parameter diffhist +2,381 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Werkstoffkenngröße}} {{PSM_Infobox}} Material parameter __FORCETOC__ ==Terminology== A material parameter (also parameter) is a quantitatively determinable property of a material. It can either be measured directly (physical measurand) or calculated from other measurands (derived parameter). In the technical literature, Blumenauer [1—3] in particular has pointed out a clear separat...")

N 12:39

KNOOP Hardness diffhist +5,275 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=KNOOP-Härte}} {{PSM_Infobox}} KNOOP hardness __FORCETOC__ ==Basics== The KNOOP hardness test method was introduced into materials testing in 1939 by Knoop, Peters and Emerson. It is one of the classic conventional test methods for evaluating hardness, whereby an allocation to the small load or micro range was made from the outset and 10 N was recommended as the highes...")

2 December 2025

N 10:51

IRHD Hardness diffhist +5,206 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=IRHD-Härte}} {{PSM_Infobox}} IRHD hardness __FORCETOC__ ==General== The IRHD (International Rubber Hardness Degree) hardness test method was developed specifically for elastomers and thermoplastic elastomers, in which the total deformation at small loads is used to obtain characteristic values. The IRHD hardness is determined in accordance with ISO 48-2, which was...")

			10:46		(Upload log) [Oluschinski (4×)]
					10:46 Oluschinski talk contribs uploaded File:InstrHaertepruefung MethodeKenngroesse-4.jpg
					10:45 Oluschinski talk contribs uploaded File:InstrHaertepruefung MethodeKenngroesse-3.jpg
					10:45 Oluschinski talk contribs uploaded File:Instrumented Hardness Test 2.jpg
					10:45 Oluschinski talk contribs uploaded File:Instrumented Hardness Test 1.jpg

N 09:43

Hardness diffhist +13,812 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Härte}} {{PSM_Infobox}} Hardness __FORCETOC__ ==General principles== ===Definition=== Hardness is the mechanical resistance that a body opposes to the mechanical indentation of another, generally harder, but in some circumstances equally hard body. Thus, a hard body resists the indentation of a foreign body more than a soft one, from which it can be directly derived that hardness i...")

N 09:42

Grellmann, Wolfgang diffhist +10,174 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Grellmann, Wolfgang}} {{PSM_Infobox}} Grellmann, Wolfgang __FORCETOC__ 150px {| |- valign="top" |width="50px"|'''Photo''': |width="600px" |Prof. Dr. Wolfgang Grellmann |} [https://de.wikipedia.org/wiki/Wolfgang_Grellmann Prof. Dr. Wolfgang Grellmann], born on 22 July 1949 in [https://de.wikipedia.org/wiki/Ammendorf/Beesen Ammendorf] (today: [https://en.wikipe...")

N 09:27

Fracture Mechanics diffhist +15,213 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Bruchmechanik}} {{PSM_Infobox}} Fracture mechanics __FORCETOC__ ==Linear-elastic fracture mechanics== Fracture mechanics assumes that the fracture of a component and thus of the material occurs as a result of the propagation of cracks. It investigates the conditions for Crack Propagation|crack propaga...")

1 December 2025

N 11:22

Electronic Instrumentation diffhist +7,951 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Instrumentierung}} {{PSM_Infobox}} Instrumentation __FORCETOC__ ==Registration of load (force) and deflection (displacement)== Instrumentation refers to the equipping of frequently non-instrumented testing equipment in materials testing, such as pendulum impact testers and hardness testing systems, with load (force) an...")

			N 11:01		Elastic Modulus 2 changes history +19,974 [Oluschinski (2×)]
					11:01 (cur \| prev) +12 Oluschinski talk contribs (→Ultrasound testing)
			N		09:39 (cur \| prev) +19,962 Oluschinski talk contribs (Created page with "{{Language_sel\|LANG=ger\|ARTIKEL=Elastizitätsmodul}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Elastic modulus</span> __FORCETOC__ ==Introduction== In addition to the Poisson's ratio, the modulus of elasticity (modulus ''E'') is also an important parameter for describing the energy-elastic properties (see: energy elasticity) of plastics. The short-term moduli ''E''<sub>t...")

28 November 2025

N 14:25

Bierögel, Christian diffhist +6,198 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Bierögel, Christian}} {{PSM_Infobox}} Bierögel, Christian __FORCETOC__ file:Bieroegel.jpg {| |- valign="top" |width="50px"|'''Photo''': |width="600px" |Prof. Dr. Christian Bierögel |} Prof. Dr. Christian Bierögel (1953–2018), born on 18 January 1953 in Dresden, attended primary school in Dresden/[https://de.wikipedia.org/wiki/Cursdorf Cursdorf] and [https://en.wikipedia.o...")

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