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Showing 1 to 20 of 29 for “"Creep test"”.
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Investigation of indentation derived creep response using constant load and constant strain rate methods
… can occur at high temperatures. Typically the creep test is conducted to characterize the deformation features; however, the conventional uniaxial power-law creep test may be impractical for small scale materials. Accordingly, instrumented indentation techniques are frequently employed. This …
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Evaluación y aplicación del ensayo de fluencia miniatura de punzonado (SPCT) para la determinación de las propiedades a creep en la aleación de magnesio AZ31B
Para caracterizar el comportamiento a creep (fluencia a temperatura) de un material en general, se utilizan probetas convencionales estándar (cilíndricas o planas) para la realización de ensayos de fluencia uniaxiales normalizados o (Uniaxial Creep Test) (UCT). En ocasiones, no es posible contar …
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ΔΙΕΡΕΥΝΗΣΗ ΤΗΣ ΔΥΝΑΤΟΤΗΤΑΣ ΧΡΗΣΙΜΟΠΟΙΗΣΗΣ ΤΗΣ ΙΠΤΑΜΕΝΗΣ ΤΕΦΡΑΣ ΠΤΟΛΕΜΑΙΔΟΣ ΣΤΑ ΑΣΦΑΛΤΟΜΙΓΜΑΤΑ
… AN EVALUATION OF THE ENGINEERING PROPERTIES, CREEP DEFORMATION AND PERMEABILITY OF ASPHALT CONCRETE CONTAINING PULVERISED FUEL ASH(OR FLY ASH) OF PTOLEMAIDA -GREECE. THE ASPHALT CONCRETE CONTAINS FLY ASH AS APARTIAL REPLACEMENT OF LIMESTONE FILLER. THE EVALUATION OF THE PROPERTIES, MENTIONED …
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Experimental Study on Viscoelastic Properties and Fracture Characteristics in Polymers
… the viscoelastic properties of polymers on creep test under constant load;<br />2. To determine the internal friction (loss factor) of polymers under periodic loading condition;<br />3. To determine the delayed time or life time on fracture of the polymer under constant loading ; and<br /> …
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Evaluation of the sag properties in a dual stabilized ferritic stainless steel
… is required to have a certain degree of creep resistance in the operating environment. The customer, by means of a modified creep test known as the sag test, usually specifies this requirement. This requirement is attained in most cases; however, in certain instances the customer places a …
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The influence of microstructure on the creep properties of 441 ferritic stainless steel
… determine the influence of microstructure on the creep properties of 441 stainless steel. Of particular interest was the effect of grain size and of the niobium content. A further requirement of this investigation was to design and manufacture two lever-arm type, constant load creep rigs in …
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An experimental investigation of the material response of graphite/polyphenylene sulfide
… investigated. Quasi-static tension tests were performed on specimens cut from unidirectional panels at angles of 0°, 90°, and 10° in order to the find material properties of the system. The moduli and strengths were compared to those of several other graphite/epoxy systems. The …
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Multiaxial creep models for 304 stainless steel
… equations were developed to describe creep strain of 304 stainless steel at 593 [degrees] C (1100 [degrees] F) under variable stresses of pure tension, pure torsion and combined tension and torsion. One was based on isotropic strain hardening concept and the other employed a state …
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Influence of High Temperature Creep upon the Structure of ß-NiAl and ß-NiAl(Fe) Single Crystals
… quantitatively the influence of high temperature creep upon the structure of ß-NiAl and ß-NiAl(Fe) single crystals. A non-destructive procedure is established following the classic line of X-ray structure analysis, namely controlling the chemical composition with the electron probe microanalysis, …
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Biaxial Mechanical Evaluation of Uterosacral and Cardinal Ligaments
… USL and CL due to ethical concerns with in vivo testing of human tissues and the lack of accepted animal models. The goal of this first study is to help establish an appropriate animal model for studying the mechanics of these pelvic supportive ligaments. To achieve this, the first rigorous …
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Rheological characterization and modeling of Laponite gels with application to snug-like locomotion
… obtained on an AR1000 rheometer through various testing methods: stress sweep, creep tests, and large amplitude oscillatory shear tests, defined as LAOS. Concentrations of 1%, 2%, 2.5%, 3%, and 4% wt. of Laponite and distilled water solutions were tested. Laponite gels over 1% wt. concentrations …
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A study of biaxial viscoelastic behavior
… stress conditions by means of one dimensional tests. The conclusions are based upon comparison of theory and experiment for a creep test of a lead plate, subjected to biaxial tension. The stress-strain law that was selected is given by S<sub>ij</sub> = B σ²/σt² e<sub>ij</sub> + c σ/σt …
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Time-dependent deformations of vaginal tissue: Experiments and constitutive modeling
… canal during parturition. In spite of this, the creep properties of the organ have been insufficiently characterized and warrant further study. Here, we provide a detailed review of experimental characterization of the passive mechanical properties of the vagina, and then present the results of …
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Hydrogen-enhanced transient creep of 310S and AL 29-4-2 stainless steel
Transient creep of hydrogenated 310S and AL 29-4-2 stainless steels at ambient temperatures was studied to determine the effects of hydrogen on plastic deformation. Thin specimens were slowly cathodically charged to uniform hydrogen contents, and no significant damage was introduced. A constant …
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Indentation vs. Uniaxial Power-law Creep of Sn-based Solder Material: A Numerical Assessment
It is crucial to understand the creep behavior of Pb-free solder alloys in electronic packaging. Typical service environments are between 298 and 373K. The thermal mismatch induced stresses acting on solder joints result in extensive rate-dependent plastic deformation. The solder alloy is …
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Stress-induced Damage and Post-fire Response of Aluminum Alloys
… and 6061-T651 aluminum alloy. Thermo-mechanical tests were performed at various temperatures and stresses to study the stress-induced damage at induced plastic creep strain levels. Unstressed thermally exposed and thermo-mechanically damaged samples were examined to separate the stress-induced …
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Melt and Rheological Characteristics of Low Moisture Part Skim Mozzarella Cheese as Affected by the Starter Culture and Coagulating Enzymes
… of cheese as measured by modified Schreiber test showed significant differences for cheeses made with different type of cultures, and also for different types and level of coagulating enzymes. However, when the meltability was measured by Creep test, it was found that the differences were not …
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Creep Behavior Of Thin Laminates Of Iron-Cobalt Alloys For Use In Switched Reluctance Motors And Generators
… this effort to measure, model, and predict the creep behavior of such advanced magnetic materials. Hiperco® Alloy 50HS, manufactured by Carpenter Technology Corporation, is one of the leading candidates for application and is studied in this effort by subjecting mechanical test specimens to a …
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The rheology and dynamic properties of biopolymers in a colloidal suspension
… that is well matched with the steady shear and creep test results. Following these experimental studies, molecular dynamics (MD) simulations that can probe atomic interactions at a fine temporal and spatial resolution were run, given that the unique rheological properties of biopolymers arise …
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Creep behavior of natural fiber reinforced polymer composites
Creep behavior of natural fiber/polymer composites (NFPCs) was studied in response to the increasing application of this material as structural building products. Factors that influence creep behavior of the composites were investigated by analyzing creep curves of several different NFPC systems, …
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