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Showing 1 to 11 of 11 for “"Uniaxial tests"”.
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Experimental Determination of the Non-linear, Large Strain Zonal Mechanical Properties of Cartilage for Use in Quasi-static Finite Element Model.
A series of impact tests on porcine cartilage are being conducted to investigate the mechanism of tissue degeneration. In order to investigate the stress distribution over the impact area of the tissue and to correlate that with the available physical data, an Ogden hyperelastic constitutive model …
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Extraction of Inelastic Mecahnical Properties of Metals from Indentation Data
… and properties obtained via conventional uniaxial testing. It is demonstrated that it is possible to extract the stress strain behaviour of metals that compare well with the macroscopically measured properties using an instrumented indentation load displacement plot, as long as the …
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Material Characterization of Insect Tracheal Tubes
… americana). We performed quasi-static uniaxial tests on the tissue which revealed a nonlinear stress-strain response even under small deformations. A detailed analysis of the tissue's microstructural arrangement using both light and electron mi- croscopy revealed the primary sources of …
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Deformation, yield, relaxation and recovery in partially processed leather
… Rheological behaviour was characterised in uniaxial tests by measuring the stress-strain relationship, the immediate and recovered set and stress relaxation. The influence of moisture content, time under strain and applied strain were determined. The effect of drying under strain was also …
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Development of a Biaxial Testing System for Research of Soft Tissue Biomechanics using Laboratory Models
… to replicate the coronary artery. The first uniaxial elastomer tests were performed using Sylgard 184, where we manipulated the curing temperature, mix ratio of elastomer and cross linker, and addition of curing reagents (n=10 / group) to adjust its tensile strength. However, the lowest …
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Interphase properties and their effects on the compression mechanics of polymeric composites
… zone on elastic and inelastic properties of uniaxial tests was significant. The PVP interphase increased failure strain and strength for both tension and compression. Only the inelastic properties of the off-axis tests were affected by the contrasting interphases, and were similar for both …
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Design, manufacture and commissioning of a low pressure quasistatic bulge tester for skin and membrane tissue
… was used to manufacture specimens for uniaxial and bulge experimental testing. Two types of bulge specimens were manufactured, standard round specimens and elliptical specimens. The round specimens were used to compare their material response to uniaxial tests and the elliptical bulge …
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Comportamiento mecánico de la aorta ascendente : caracterización experimental y simulación numérica
… los modelos ajustados en los ensayos de tracción uniaxial se ha realizado la simulación de diversos ensayos de presurización, validándose con las mediciones efectuadas en este mismo trabajo. Finalmente, también se ha llevado a cabo el análisis numérico de un cayado aórtico en condiciones de …
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Constitutive modelling of the skin accounting for chronological ageing
… within a finite element scheme. Simple uniaxial tests are employed to ascertain the validity of the model, whereby skin samples are stretched to elicit the typical anisotropic locking response. A more complex loading condition is applied through bulge tests where a pressure is applied to …
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Numerische Simulation von unbewehrten und textilverstärkten Mauerwerksscheiben unter zyklischer Belastung
… which is based on the principal of equivalent uniaxial strain according to DARWIN and PECKNOLD. The idea of this concept is the decoupled formulation of the biaxial stress-strain-relationship for each principle stress direction. Then the current stress state depends not only on the present …
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Μελέτη διάδοσης τασικών κυμάτων σε πολύστρωτες διατάξεις ινωδών συνθέτων υλικών. Αποτίμηση δομικής ακεραιότητας κατασκευαστικών στοιχείων
Κίνητρο της παρούσας διατριβής αποτέλεσε η αποτίμηση της δομικής ακεραιότητας κελυφοειδών κατασκευών από σύνθετα υλικά που παρουσιάζουν ανοχή στη βλάβη, με τη χρήση ακουστικών τεχνικών μη καταστροφικού ελέγχου. Στόχος ήταν η πειραματική και θεωρητική μελέτη επίδρασης της αστοχίας, που αναπτύσσεται …