Hossein Beygi Nasrabadi. (2024.01.24) Mechanical Testing Ontology (MTO). Version 3.0.2, www.gitlab.com/kupferdigital/ontologies/mechanical-testing-ontology
Hossein Beygi Nasrabadi (www.orcid.org/0000-0002-3092-0532)
KuferDigital project (www.materialdigital.de/project/1)
The materials mechanical testing ontology (MTO) was developed by collecting the mechanical testing vocabulary from ISO 23718 standard, as well as the standardized testing processes described for various mechanical testing of materials like tensile testing, Brinell hardness test, Vickers hardness test, stress relaxation test, and fatigue testing.
Hossein Beygi Nasrabadi. (2024.01.15) Fatigue Test Ontology (FTO). Version 2.0.4, www.gitlab.com/kupferdigital/process-graphs/lcf-test
Fatigue Test Ontology (FTO) has developed for representing the fatigue testing process, testing equipment requirements, test pieces charactristics, and related testing parameters and their measurement procedure according to DIN EN ISO 12106 standard.
linear strain in the direction of the applied force
smallest segment of the strain-time function that is repeated periodically
devices that convert electric energy into mechanical force in such a way as to execute work, mostly moving an object or a device
axial strain calculated as the change in length divided by the original length
instantaneous force divided by the initial cross-sectional area of the gauge length
time duration required to obtain the number of cycles, Nf
sheets with two plane, substantially parallel surfaces
Force capacity refers to the fact that the machine must be able to generate enough force to fracture the specimen.
conducting axial, constant-amplitude, force-controlled, cyclic fatigue tests on specimens of a metal for the sake of generating fatigue-life data (i.e. stress vs. cycles to failure) for material characterization.
natural fractures in a formation resulting from external stress, usually being associated with a displacement
number of force or strain cycles per unit time applied to the test piece during fatigue testing
Grinding is the process of removing the surface of a hard material using a wheel made from or covered in hard grit.
device to hold a test specimen and to transfer a uniaxial tensile force to a test specimen during the test
a process by which something is handled in a commercial transaction.
fatigue test carried out in the region where the stress behaviour is dominant and fatigue life is relatively longer
general term for the amount of water vapour in the air
cylindrical tube and piston assemblies that utilize hydraulic power to generate linear, rotary, or oscillatory motion
Fatigue testing of metallic materials by an axial-strain-controlled method according to ISO 12106:2017 standard
fatigue test carried out in the region where the cyclic plastic strain behaviour is dominant and fatigue life is relatively shorter
Machining is the process of cutting, shaping, or removing material from a workpiece using a machine tool.
one-half of the algebraic sum of the maximum and minimum values of a variable
highest stress in the region or component under consideration
plastic strain component of a controlled strain
make the surface of (something) smooth and shiny by rubbing it.
algebraic difference between the maximum and minimum values of a variable
stress that remains in a structure after processing, fabrication, assembly, testing or operation
bar having a circular cross section of diameter generally 8 mm or over
the action or process of taking samples of something for analysis.
the action or method of storing something for future use.
one-half of the algebraic difference between the maximum strain and the minimum strain in the strain cycle
algebraic difference between the maximum and minimum values of strain
one-half of the algebraic difference between the maximum stress and the minimum stress in the stress cycle
fatigue test under the conditions where cyclic, theoretically uniform temperatures within the test section and strain fields are externally imposed, simultaneously varied and controlled
from parallel length into the grip end of the test specimen
natural logarithm of the ratio of an instantaneous length to its original length in the direction of the applied force up to the onset of necking
instantaneous force divided by the instantaneous cross-sectional area of the gauge length
machine for smooth startup of fatigue test with no backlash when passing through zero stress.
Hossein Beygi Nasrabadi, (2024.01.29) Tensile Stress Relaxation Test Ontology (TSRTO). Version 3.0.0, www.gitlab.com/kupferdigital/process-graphs/relaxation-test
Tensile Stress Relaxation Test Ontology (TSRTO)
Tensile Stress Relaxation Test Ontology (TSRTO) has developed for representing the tensile stress relaxation testing process, testing equipment requirements, test pieces charactristics, and related testing parameters and their measurement procedure according to DIN EN ISO 10319-1 standard.
Hossein Beygi Nasrabadi. (2024.01.15) Tensile Test Ontology (TTO). Version 3.0.2, www.gitlab.com/kupferdigital/process-graphs/tensile-test
Tensile Test Ontology (BTO) has developed for representing the tensile testing process, testing equipment requirements, test pieces charactristics, and related testing parameters and their measurement procedure according to DIN EN ISO 6892-1 standard.
ambient conditions defined by the parameters of temperature and relative humidity
set of operations that establish, under specified conditions, the relationship between values indicated by a measuring instrument or measuring system, or values represented by a material measure, and the corresponding known values of a reference standard
number of cycles of stress in fatigue test
system for storing and/or providing permanent copies of test information
axial movement of the pile head measured during testing
permanent deformation resulting from fracture; plastic deformation or loosening beyond the ultimate displacement that would render the spinal implant assembly ineffective or unable to adequately resist load
device used to determine mass by measuring the force applied either by tension or pressure
greatest algebraic value of a variable within one cycle
least algebraic value of a variable within one cycle
method|of testing uniaxially deformed specimens under strain control at constant|amplitude
non-negative parameter characterizing the dispersion of the quantity values being attributed to a measurand, based on the information used
shape of the wave when seen on an oscilloscope or digitized display
device that provides a physical output in response to a input signal in a predetermined way
slope of cyclic curve log(σ a) as a function of log(σpa)
value of stress that intercepts at εpa = 1 on a cyclic graph log(σa) as a function of log(εpa)
Plastic-strain intercept at 2Nf = 1 on lg (Δεp/2) − lg 2Nf plot
Slope of lg (Δεp/2) − lg 2Nf plot (Specify 2Nf range)
number of cycles that have to be applied to achieve a failure
Stress intercept at 2Nf = 1 on lg σa − lg 2Nf plot
value of slope of curve log(εe) as a function of log(2Nf)
plastic deformation that may occur during fatigue loading
ratio of minimum to maximum strain during any single cycle of fatigue operation
closed curve of the stress-strain response during one complete cycle
test where repeated stress is applied to a test specimen, and the number of cycles to fracture is measured
The mechanical properties related to the fatigue bahaviour of materials
The process of preparing qualified specimen for testing purpuse
relative deformation caused by a force applied to a test piece