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

N    13:51  Polymer diffhist +4,919 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Polymer}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Polymer</span> __FORCETOC__ ==Definition== The term ‘polymer’ refers to chemical compounds consisting of chain or branched molecules (macromolecules), which in turn consist of a large number of identical or similar units, known as monomers (see Weblinks). Polymers are substances (macromolecules) whose molecular weights are in an integer ratio to e...")
N    13:50  Plastics – Symbols and Abbreviated Terms diffhist +6,180 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Kurzzeichen}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Plastics – Symbols and abbreviated terms</span> __FORCETOC__ The abbreviations for plastics are often based on the basic polymers which are content on it. The upper-case letters used for this purpose are given in: ==ISO 1043: Plastics – Symbols and abbreviated terms== * Part 1 (2011-11): Basic Polymers and their Special Characteristics, modified by ISO 1...")
N    13:49  Plastics diffhist +4,515 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Kunststoffe}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Plastics</span> __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    13:31  Notch diffhist +3,175 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Kerb}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Notch</span> __FORCETOC__ ==Definition== The distinction between the fracture mechanics terms notch and crack is often somewhat blurred in the literature. Notches and cracks differ in that the inner boundary surfaces of a crack are in contact in the unloaded state, whereas they are not in the case of a notch. From a mathematical point of view...")
N    13:01  Measured Variable diffhist +2,542 Oluschinski talk contribs (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...")
N    12:59  Material Value diffhist +2,657 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Werkstoffkennwert}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Material value</span> __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}} <span style="font-size:1.2em;font-weight:bold;">Material & Werkstoff</span> __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    12:58  Material Parameter diffhist +2,381 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Werkstoffkenngröße}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Material parameter</span> __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    12:35  J-Integral Concept diffhist +7,064 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=J-Integral-Konzept}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">''J''-integral concept</span> __FORCETOC__ ==Energetic consideration of the fracture process== The ''J''-integral introduced by Cherepanov [1] and Rice [2] has gained the greatest importance for plastics due to the energetic consideration of the fracture process (see: Fracture mechanics and Fracture Types | types...")

2 December 2025

N    09:42  Grellmann, Wolfgang diffhist +10,174 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Grellmann, Wolfgang}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Grellmann, Wolfgang</span> __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    09:32  Fracture Mirror diffhist +6,556 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Bruchspiegel}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Fracture mirror</span> __FORCETOC__ ==General information== Information about the cause of the fracture (see: fracture formation), the type of stress (static, dynamic or tensile, bending, torsion, etc.) and...")
N    09:31  Fracture Modes diffhist +3,484 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Bruchmoden}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Fracture modes</span> __FORCETOC__ ==General information== When deriving the fundamental relationships of fracture mechanics, three different possibilities for material separation at the crack tip (see also: crack) are assumed [1–3], resulting in a distinction between three Crack Opening Modes|crack o...")
     09:31  (Upload log) [Oluschinski (5×)]
     
09:31 Oluschinski talk contribs uploaded File:Frakture Mechanics Fig5.jpg
     
09:30 Oluschinski talk contribs uploaded File:Frakture Mechanics Fig4.jpg
     
09:30 Oluschinski talk contribs uploaded File:LEBM Tabelle 2.jpg
     
09:29 Oluschinski talk contribs uploaded File:Frakture Mechanics Fig2.jpg
     
09:29 Oluschinski talk contribs uploaded File:LEBM 1.jpg
N    09:27  Fracture Mechanical Testing diffhist +3,921 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Bruchmechanische Prüfung}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Fracture mechanical testing</span> __FORCETOC__ ==General information== Different experimental methods can be used to determine fracture mechanics parameters for plastics and elastomers. The loading speed or the type of loading ( stress) is of great importance here, whic...")
N    09:24  Fracture Behaviour diffhist +6,411 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Bruchverhalten}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Fracture behaviour, plastics</span> __FORCETOC__ ==General information== Depending on the type and stress conditions, polymer materials (see also: plastics) exhibit very different behaviour at break. Some semi-crystalline polymers such as polyamide (abbreviation: PA), polyethylene (...")
N    09:23  Fracture diffhist +3,047 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Bruch}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Fracture</span> __FORCETOC__ ==The fracture of plastics== Fracture is the most dangerous cause of failure on the material side. The term "fracture" refers to the macroscopic separation of the material leading to the loss of the load-bearing capacity of the body. In the case of plastics, material separation occurs through the brea...")

1 December 2025

N    11:29  Error Limit 2 changes history +1,466 [Oluschinski (2×)]
     
11:29 (cur | prev) −3 Oluschinski talk contribs
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11:28 (cur | prev) +1,469 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Fehlergrenze}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">A-Bild-Technik</span> __FORCETOC__ ==Explanation of terms== In measurement or testing technology, error limits or limit deviations [1] are agreed or guaranteed maximum values for positive or negative deviations of the measured value display (output) of a measuring device from the correct value [2] (see also: measured value). Error limits mus...")
N    09:36  Effective Crack Length diffhist +3,110 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Effektive Risslänge}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Effective crack length</span> __FORCETOC__ ==The environment of the crack tip== In the case of macroscopically brittle fracture behaviour, plastic deformation often occurs due to stress concentration in front of the crack tip, i.e. the formation of a Plastic Zone|plastic zon...")
N    08:25  Crosshead Speed diffhist +2,741 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Traversengeschwindigkeit}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Crosshead speed</span> __FORCETOC__ ==Fundamental Introduction== Universal testing machines (see material testing machine) usually have two mechanical supports that are used to attach load cells, fixtures and clamping fixtures. The stationary support is called the crosshead, and the support that moves up or down is th...")
N    08:15  Crack Toughness diffhist +5,104 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Risszähigkeit}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Crack toughness</span> __FORCETOC__ ==Explanation of terms== In fracture mechanics, crack toughness or fracture toughness describes the resistance of a component or material to crack propagation of any kind. Cracks are undesirable material discontinuities that...")
N    08:12  Crack Tip Opening Displacement Concept (CTOD) diffhist +5,519 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Crack Tip Opening Displacement-Konzept}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Crack tip opening displacement concept (CTOD)</span> __FORCETOC__ CTOD concept ==On the diversity of terms== The crack tip opening displacement (CTOD) concept of yield fracture mechanics was derived by Wells using the crack model according to DUGDALE [1, 2]. It is often a...")
N    08:11  Crack Resistance Curve – Experimental Methods diffhist +3,979 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Risswiderstandskurve – Experimentelle Methoden}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Crack resistance curve – Experimental methods</span> __FORCETOC__ ==Crack resistance curve – Experimental methods== For the experimental recording of crack resistance (R) curves under dynamic (impact) loading, e.g. in the Instrumented Charpy Impact Test|Instrum...")
N    08:08  Crack Propagation diffhist +4,118 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Rissausbreitung}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Crack propagation</span> __FORCETOC__ ==General terms== Crack propagation is a physical process that occurs under certain conditions in a moulded part or component after crack initiation and can lead to macroscopic separation and fracture. Crack propagation occurs in the material when material-dependent limit values, such as the critical stress intensity fa...")
N    08:06  Crack Opening diffhist +1,631 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Rissöffnung}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Crack opening</span> __FORCETOC__ ==Definition of crack opening== The determination at the location of the original crack tip has become the standard for defining the crack opening. For numerical calculations, the CTOD value is determined as the intersection of the crack edges with the straight line e...")
N    08:03  Crack Model according to IRWIN and Mc CLINTOCK diffhist +5,882 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Rissmodell nach IRWIN und Mc CLINTOCK}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Crack model to IRWIN & Mc CLINTOCK</span> __FORCETOC__ ==Basics of the model== The application of the crack model according to GRIFFITH and the determination of the fracture toughness values based on it are linked to a purely elastic deformation of the stressed material. However, most technical...")
N    08:00  Crack Model according to DUGDALE diffhist +2,494 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Rissmodell nach DUGDALE}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Crack model according to DUGDALE</span> __FORCETOC__ ==Fundamentals of the concept== DUGDALE's crack model was derived by WELLS in 1961 and is considered the basis for the Crack tip opening displacement concept (CTOD) concept of yield fracture mechanics....")
N    07:57  Crack Initiation diffhist +2,051 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Rissinitiierung}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Crack initiation</span> __FORCETOC__ ==Initiation of a crack== Crack initiation is essentially the transition from a stationary crack to a moving crack. Starting from microdefects in the material volume, the resulting stress concentrations cause the fracture strength to be exceeded local...")
N    07:52  Crack diffhist +10,614 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Riss}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Crack</span> __FORCETOC__ ==General definition== A crack is a discontinuity that can be present in a material due to production-related or operational causes [1]. If it exceeds a permissible critical expansion, the crack is the most dangerous of all discontinuities, as it represents a material separation, i.e. a material area whose load-bearing capacity is no longer g...")
N    07:07  Blumenauer, Horst diffhist +4,566 Oluschinski talk contribs (Created page with "{{Language_sel|LANG=ger|ARTIKEL=Blumenauer, Horst}} {{PSM_Infobox}} <span style="font-size:1.2em;font-weight:bold;">Blumenauer, Horst</span> __FORCETOC__ 150px {| |- valign="top" |width="50px"|'''Photo''': |width="600px" |Prof. Dr.-Ing. habil. Dr.-Ing. e.h. Horst Blumenauer |} Horst Blumenauer (7 February 1935–15 May 2018) was a renowned German materials scientist and materials mechanic who taught as a professor of ‘Metallurgy and Me...")