Full-notch creep test ontology (OntoFNCT)
Release 2023-12
- This version:
- https://w3id.org/ontofnct/1.0.0
- Revision:
- 1.0.0
- Authors:
- https://orcid.org/0000-0001-9753-345X
- https://orcid.org/0000-0002-4970-7627
- https://orcid.org/0000-0002-7094-5371
- https://orcid.org/0009-0001-0315-3964
- Imported Ontologies:
- prov-o#
- prov-o-inverses#
- co
- Download serialization:
- License:
- Visualization:
- Cite as:
- Markus Schilling, Niklas Marschall, Ute Niebergall, Martin Böhning. (December 04th, 2023) OntoFNCT: full-notch creep test ontology. Version 1.0.0, https://w3id.org/ontofnct/
Ontology Specification Draft
Abstract
This is the stable version of the full-notch creep test ontology (OntoFNCT) that ontologically represents the full-notch creep test. OntoFNCT has been developed in accordance with the corresponding test standard ISO 16770:2019-09 Plastics - Determination of environmental stress cracking (ESC) of polyethylene - Full-notch creep test (FNCT). The OntoFNCT provides conceptualizations that are supposed to be valid for the description of full-notch creep tests and associated data in accordance with the corresponding test standard. By using OntoFNCT for storing full-notch creep test data, all data will be well structured and based on a common vocabulary agreed on by an expert group (generation of FAIR data) which is meant to lead to enhanced data interoperability. This comprises several data categories such as primary data, secondary data and metadata. Data will be human and machine readable. The usage of OntoFNCT facilitates data retrieval and downstream usage. Due to a close connection to the mid-level PMD core ontology (PMDco), the interoperability of full-notch creep test data is enhanced and querying in combination with other aspects and data within the broad field of materials science and engineering (MSE) is facilitated. The class structure of OntoFNCT forms a comprehensible and semantic layer for unified storage of data generated in a full-notch creep test including the possibility to record data from analysis and re-evaluation. Furthermore, extensive metadata allows to assess data quality and reliability. Following the open world assumption, object properties are deliberately low restrictive and sparse. OntoFNCT at GitHub: https://github.com/MarkusSchilling/ontoFNCTFull-notch creep test ontology (OntoFNCT): Overview back to ToC
This ontology has the following classes and properties.Classes
- Actual Tensile Stress
- Batch Number
- Brittle Failure
- Conditioning Time
- Criterion of brittleness
- Depth
- Ductile Failure
- Elongation
- Extensometer Capacity
- Failure
- Final Elongation
- Fracture Type Transition Point
- Full-Notch Creep Test
- Full-notch creep test device
- Lever-arm Ratio
- Measured Ligament Area
- Nominal Ligament Area
- Nominal Tensile Stress
- Notch
- Notch Depth
- Notching Speed
- Preload
- Preload Time
- Reference Tensile Stress
- Tensile Stress
- Test Container
- Test Force Increase Rate
- Time To Failure
- Time To Failure At The Reference Tensile Stress
Cross-reference for Full-notch creep test ontology (OntoFNCT) classes, object properties and data properties back to ToC
This section provides details for each class and property defined by Full-notch creep test ontology (OntoFNCT).Classes
- Actual Tensile Stress
- Batch Number
- Brittle Failure
- Conditioning Time
- Criterion of brittleness
- Depth
- Ductile Failure
- Elongation
- Extensometer Capacity
- Failure
- Final Elongation
- Fracture Type Transition Point
- Full-Notch Creep Test
- Full-notch creep test device
- Lever-arm Ratio
- Measured Ligament Area
- Nominal Ligament Area
- Nominal Tensile Stress
- Notch
- Notch Depth
- Notching Speed
- Preload
- Preload Time
- Reference Tensile Stress
- Tensile Stress
- Test Container
- Test Force Increase Rate
- Time To Failure
- Time To Failure At The Reference Tensile Stress
Actual Tensile Stressc back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/ActualTensileStress
Symbol: sigma_L
- Is defined by
- https://w3id.org/ontofnct
- is equivalent to
- characteristic some Measured Ligament Area c
- characteristic some force
- has super-classes
- Tensile Stress c
Batch Numberc back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/BatchNumber
This class refers to a unique identifier assigned to a group of items manufactured or produced together under similar conditions, typically within the same production run or timeframe. The batch number helps track and manage these items throughout their lifecycle, including production, distribution, and post-sale activities such as recalls or quality control measures.
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- identifier
Brittle Failurec back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/BrittleFailure
This class describes a sort of failure, in which the fracture surface exhibits no permanent material deformation to the naked human eye, such as, e.g. stretching, elongation or necking down
Note: If the brittle area is less than 20 % of the total ligament, the failure is ranked as ductile.
Note: The beginning of the transition to ductile failure behaviour may be indicated by an extended ligament, which may form in the centre.
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- Failure c
- is disjoint with
- Ductile Failure c
Conditioning Timec back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/ConditioningTime
This class describes the time (duration) that is used to subject a material to standard and controlled environmental and/or stress conditions prior to testing.
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- time
Criterion of brittlenessc back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/CriterionOfBrittleness
Symbol: B
This class describes a measure of the brittleness of the fracture of an FNCT test piece that is based on fracture surface roughness parameters, heights of distinct fracture surface features, and proportions of fracture surface areas. This measure can be used as a criterion for evaluating a fracture caused by the FNCT.
Note: The criterion of brittleness is a comparative scalar, given without unit.
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- value object
Depthc back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/Depth
This class describes a dimension taken through an object or body of material, usually downward from an upper surface, horizontally inward from an outer surface, or from top to bottom of something regarded as one of several layers.
Note: Depth also denotes the quality of being deep.
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- value object
- has sub-classes
- Notch Depth c
Ductile Failurec back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/DuctileFailure
This class describes a sort of failure, in which the fracture surface clearly exhibits permanent material deformation with stretching, elongation and necking down.
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- Failure c
- is disjoint with
- Brittle Failure c
Elongationc back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/Elongation
This class describes the increase in the original length of an object, such as a test specimen, at any moment during a test.
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- value object
- has sub-classes
- Final Elongation c
Extensometer Capacityc back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/ExtensometerCapacity
This class describes the maximal capability of an extensometer to measure changes in the length of an object, such as a test specimen.
Note: Typically, the maximum extensometer length (maximal measurement range) is given.
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- value object
Failurec back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/Failure
This class describes qualitatively the complete separation of the two halves of the test specimen. The quality is intended to be described by a boolean value representing wheter or not the test specimen showed entire failure.
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- value object
- has sub-classes
- Brittle Failure c, Ductile Failure c
Final Elongationc back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/FinalElongation
This class describes the elongation of a test specimen at the end of a test. This elongation may or may not be permanent to the object under consideration, depending on the associated material behavior.
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- Elongation c
Fracture Type Transition Pointc back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/FractureTypeTransitionPoint
This class describes the stress value denoting the transition from brittle to ductile fracture occurring to FNCT specimens valid for a specific, distinct material and environmental fluid combination as typically determined in a series of FNCT experiments.
- has super-classes
- value object
Full-Notch Creep Testc back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/FullNotchCreepTest
The full-notch creep test (FNCT) is a mechanical test method that is used to characterize the environmental stress cracking (ESC) behavior of polyethylene (PE) materials.
A test specimen in the form of a square-section bar with coplanar notches in each face at the centre is subjected to a static load in a temperature-controlled environment containing a surface-active detergent solution. The geometry of the test specimen is such that plane strain conditions are obtained, and brittle failure occurs under appropriate tensile load and temperature conditions. The time for this brittle failure to occur after loading is recorded.
Note: Distilled water is also a suitable environment for carrying out this test.
Note: For testing of PE-based container materials, other environments can also be used, such as dangerous goods and chemicals or suitable liquid test media.
- Is defined by
- https://w3id.org/ontofnct
- is equivalent to
- participant some Full-notch creep test device c
- participant some specimen
- has super-classes
- mechanical testing process
Full-notch creep test devicec back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/FullNotchCreepTestDevice
The full-notch creep test device is a machine to conduct a full-notch creep test. The control and monitoring of the test, the measurements, and the data processing are usually performed by computer. However, this may also be performed manually.
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- testing machine
Lever-arm Ratioc back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/LeverArmRatio
The distance between the pivot point (or fulcrum) of a lever and the point where the force is applied is important in determining the mechanical advantage of a lever, as it affects the amount of force that can be exerted and the distance over which that force is applied.
This class describes the ratio of a lever arm which is a term used in physics to describe the distance between the point where a force is applied and the point where that force is producing a rotational effect. In other words, it is the distance between the pivot point (or fulcrum) of a lever and the point where the force is applied.
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- value object
Measured Ligament Areac back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/MeasuredLigamentArea
Symbol: A_L
This class describes the actual cross-sectional area of the test specimen remaining after notching determined after testing.
Note: It is expressed in square millimetres (mm2).
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- cross section area
Nominal Ligament Areac back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/NominalLigamentArea
Symbol: A_n
This class describes the cross-sectional area of the test specimen remaining after notching.
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- cross section area
Nominal Tensile Stressc back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/NominalTensileStress
Symbol: sigma_n
This class describes the normal force per unit area of the nominal ligament area of the test specimen.
Note: It is expressed in megapascals (MPa).
- Is defined by
- https://w3id.org/ontofnct
- is equivalent to
- characteristic some Nominal Ligament Area c
- characteristic some force
- has super-classes
- Tensile Stress c
Notchc back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/Notch
In mechanical engineering and materials science, a notch refers to a V-shaped, U-shaped, or semi-circular defect deliberately introduced into a planar material. In structural components, a notch causes a stress concentration which can result in the initiation and growth of fatigue cracks. Notches are used in materials characterization to determine fracture mechanics related properties such as fracture toughness and rates of fatigue crack growth.
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- object
Notch Depthc back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/NotchDepth
This class describes the depth of a notch that may have been introduced to an object, such as, e.g., a test specimen, deliberately or unintentionally.
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- Depth c
Notching Speedc back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/NotchingSpeed
In accordance with the corresponding test standard, the notching speed of FNCT specimens is measured in mm/min.
This class describes the rate at which the material iscut during the notching process. Notching involves creating a cut in a material. The notching speed indicates how quickly this cutting action occurs.
- has super-classes
- value object
Preloadc back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/Preload
This class describes the force used to load a test specimen prior to the performance of a test procedure.
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- force
Preload Timec back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/PreloadTime
This class describes the time (duration) for which a preload (force used to load a test specimen prior to the performance of a test procedure) is applied.
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- time
Reference Tensile Stressc back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/ReferenceTensileStress
Symbol: sigma_L,ref
This class describes the selected normal force per unit area of the measured ligament area of the test specimen used for determination of comparable time to failure.
Note: It is expressed in megapascals (MPa).
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- Tensile Stress c
Tensile Stressc back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/TensileStress
The entity tensile stress is a physical quantity that describes a force imposed on an area of a considered object present during a drawing (tensile) deformation process. When an object is pulled apart, it is subject to tensile stress and may undergo elongation.
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- stress
- has sub-classes
- Actual Tensile Stress c, Nominal Tensile Stress c, Reference Tensile Stress c
Test Containerc back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/TestContainer
This class describes a hollow object, such as a box, a cylinder, or a bottle, that can be used for holding something, especially to carry or store it (container) and which is involved in a testing procedure.
- Is defined by
- https://w3id.org/ontofnct
- has super-classes
- processing node
Test Force Increase Ratec back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/TestForceIncreaseRate
Diese Klasse beschreibt die Steigerungsrate der Kraft, die während einer Prüfung auf einen Probekörper aufgebracht wird und einwirkt.
- Is defined by
- https://w3id.org/ontofnct
- https://w3id.org/ontofnct
- has super-classes
- testing rate
Time To Failurec back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/TimeToFailure
Versagenszeit
This class describes the time to failure of an individual test specimen, which is assigned to the actual tensile stress for this individually tested test specimen.
Note: The time to failure time is expressed in hours (h).
- Is defined by
- https://w3id.org/ontofnct
- is equivalent to
- characteristic some Actual Tensile Stress c
- has super-classes
- duration
Time To Failure At The Reference Tensile Stressc back to ToC or Class ToC
IRI: https://w3id.org/ontofnct/TimeToFailureAtTheReferenceTensileStress
Symbol: t_f,ref
This class describes the time to failure corresponding to the reference tensile stress, calculated by interpolating in the measured dependence of time to failure vs. actual tensile stress for individual tested specimens.
Note: It is expressed in hours (h).
- Is defined by
- https://w3id.org/ontofnct
- is equivalent to
- characteristic some Reference Tensile Stress c
- has super-classes
- duration
Legend back to ToC
c: Classes
Acknowledgments back to ToC
The authors would like to thank Silvio Peroni for developing LODE, a Live OWL Documentation Environment, which is used for representing the Cross Referencing Section of this document and Daniel Garijo for developing Widoco, the program used to create the template used in this documentation.