Relevant bibliographies by topics / Static elastic modulus

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Static elastic modulus'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Static elastic modulus.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Static elastic modulus"

1

Gao, Xiao Peng, and Fu Shun Liu. "The Study of Ultrasonic Dynamic Elastic Modulus of TiNiFe Shape Memory Alloy in Heating Process." Advanced Materials Research 79-82 (August 2009): 1699–702. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.1699.

Full text
Abstract:
The phase transformation characteristics, the dynamic elastic modulus and the static tensile elastic modulus of Ti50Ni47.5Fe2.5 alloy were investigated. It is found that, the two mutations in the dynamic elastic modulus is caused by reverse martensite phase transformation and austenite phase transformation respectively; Static tensile test can not reflect the intrinsic elastic modulus when the test temperature is close to martensite transformation temperature(Ms). The static elastic modulus and the dynamic elastic modulus have the same trend when the test temperature is enough higher than Ms.
APA, Harvard, Vancouver, ISO, and other styles
2

Sone, Hiroki, and Mark D. Zoback. "Mechanical properties of shale-gas reservoir rocks — Part 1: Static and dynamic elastic properties and anisotropy." GEOPHYSICS 78, no. 5 (September 1, 2013): D381—D392. http://dx.doi.org/10.1190/geo2013-0050.1.

Full text
Abstract:
Understanding the controls on the elastic properties of reservoir rocks is crucial for exploration and successful production from hydrocarbon reservoirs. We studied the static and dynamic elastic properties of shale gas reservoir rocks from Barnett, Haynesville, Eagle Ford, and Fort St. John shales through laboratory experiments. The elastic properties of these rocks vary significantly between reservoirs (and within a reservoir) due to the wide variety of material composition and microstructures exhibited by these organic-rich shales. The static (Young’s modulus) and dynamic (P- and S-wave moduli) elastic parameters generally decrease monotonically with the clay plus kerogen content. The variation of the elastic moduli can be explained in terms of the Voigt and Reuss limits predicted by end-member components. However, the elastic properties of the shales are strongly anisotropic and the degree of anisotropy was found to correlate with the amount of clay and organic content as well as the shale fabric. We also found that the first-loading static modulus was, on average, approximately 20% lower than the unloading/reloading static modulus. Because the unloading/reloading static modulus compares quite well to the dynamic modulus in the rocks studied, comparing static and dynamic moduli can vary considerably depending on which static modulus is used.
APA, Harvard, Vancouver, ISO, and other styles
3

Wang, Jie Jun, Yan Ge Liu, and Di Yang Xia. "Study on Vibration-Based Detection Methods for Determining the Elastic Modulus of Glulam Beams." Applied Mechanics and Materials 847 (July 2016): 463–68. http://dx.doi.org/10.4028/www.scientific.net/amm.847.463.

Full text
Abstract:
This paper presents the vibration test method of the elastic modulus of glulam beams. Under the condition of simply supported, the elastic modulus of glulam beams is tested based on the vibration method. Compared with the static modulus tested by static load test and the natural frequency tested by finite element method, vibration-based detection method is proved to be feasible and accurate in measuring the elastic modulus of glued laminated beams.
APA, Harvard, Vancouver, ISO, and other styles
4

Gong, Fei, Bangrang Di, Jianxin Wei, Pinbo Ding, He Tian, and Jianqiang Han. "A study of the anisotropic static and dynamic elastic properties of transversely isotropic rocks." GEOPHYSICS 84, no. 6 (November 1, 2019): C281—C293. http://dx.doi.org/10.1190/geo2018-0590.1.

Full text
Abstract:
The elastic properties of rock are major factors affecting hydraulic fracturing. Static elastic properties can be estimated using geomechanical laboratory tests, whereas dynamic properties can be estimated from elastic-wave velocity and rock density. We prepared two synthetic shales containing different clay minerals and one natural shale and focused on the elastic properties for the full tensor of elasticity and their anisotropy. The static and dynamic properties of these dry samples were obtained based on triaxial tests during loading and unloading. The results suggest that the synthetic and natural shale indicate high similarity in the static and dynamic properties. The dynamic Young’s modulus and Poisson’s ratio increase with increasing axial stress during loading and unloading. For the static properties, the static Poisson’s ratio increases with axial stress during loading and unloading. However, differences exist between the static and dynamic Young’s moduli during loading, with the static Young’s modulus decreases with the increasing axial stress at a high stress level. In addition, the static Young’s modulus is consistently lower than the dynamic Young’s modulus during loading and unloading, but the static Poisson’s ratio is larger or smaller than the dynamic Poisson’s ratio. During loading and unloading, there could be approximately a 30% difference when estimating static elastic properties from the static-dynamic relations, depending on which static moduli are used. Furthermore, the static and dynamic properties of the samples are strongly anisotropic, and the anisotropy of elastic properties is sensitive to the axial stress and the clay minerals.
APA, Harvard, Vancouver, ISO, and other styles
5

Choubane, Bouzid, Chung-Lung Wu, and Mang Tia. "Coarse Aggregate Effects on Elastic Moduli of Concrete." Transportation Research Record: Journal of the Transportation Research Board 1547, no. 1 (January 1996): 29–34. http://dx.doi.org/10.1177/0361198196154700105.

Full text
Abstract:
The results of a laboratory testing program carried out to investigate the effect of coarse aggregate types on the elastic modulus of typical pavement concretes are presented. The elastic modulus was determined in both flexure and compression using static and dynamic means. Three different mixes, made using three different aggregates, were compared. The water-cement ratio was kept at 0.53 throughout the test program. The results showed that within the tested range, the aggregate type significantly affected the studied properties of concrete. Calera aggregate (a dense limestone) with its rough-textured surface and angular shape produced a concrete with higher strength and stiffness than those of concretes made with Brooksville aggregate (a porous limestone) and river gravel. In addition, the measured dynamic modulus in compression was significantly different from that in flexure. Also, in flexure, the dynamic modulus was higher than the static modulus by an average of 23 percent, whereas in compression, the dynamic modulus appeared to be in the same range as the static modulus. The change in frequency from 1 to 7 Hz did not have a significant influence on the dynamic modulus.
APA, Harvard, Vancouver, ISO, and other styles
6

Qiu, Yan, Yi Wang Bao, Xiao Gen Liu, Xiu Fang Wang, and Kun Ming Li. "Comparison and Relative Error of Elastic Modulus in Glass Measured by Three Test Techniques." Key Engineering Materials 434-435 (March 2010): 209–13. http://dx.doi.org/10.4028/www.scientific.net/kem.434-435.209.

Full text
Abstract:
Elastic modulus of glass was measured using static method, dynamic method and Vickers indentation technique, respectively. The residual indent of Vickers indentation is analyzed to estimate the elastic modulus, using conventional hardness tester without load-depth curve. The modulus and hardness of glass are determined by load, deformation and residual semi-angle of the indent. The result is compared with the modulus obtained by conventional dynamic and static methods. It was shown that the modulus measured by dynamic method provides the highest value and the modulus obtained by indentation technique is between the values of dynamic modulus and static modulus. The result also shows that the modulus measured by dynamic method has very stable value and that measured by bending method has the lowest value. The modulus obtained in indentation tests shows relatively greater scatter.
APA, Harvard, Vancouver, ISO, and other styles
7

Sitharam, T. G., M. Ramulu, and V. B. Maji. "Static and Dynamic Elastic Modulus of Jointed Rock Mass." International Journal of Geotechnical Earthquake Engineering 1, no. 2 (July 2010): 89–112. http://dx.doi.org/10.4018/jgee.2010070107.

Full text
Abstract:
In this paper the compressive strength/elastic modulus of the jointed rock mass was estimated as a function of intact rock strength/modulus and joint factor. The joint factor reflects the combined effect of joint frequency, joint inclination and joint strength. Therefore, having known the intact rock properties and the joint factor, jointed rock properties can be estimated. The test results indicated that the rock mass strength decreases with an increase in the joint frequency and a sharp transition was observed from brittle to ductile behaviour with an increase in the number of joints. It was also found that the rocks with planar anisotropy exhibit the highest strength in the direction perpendicular to the anisotropy and the lowest at an inclination of 30o-45o in jointed samples. The anisotropy of the specimen influences the dynamic elastic modulus more than the static elastic modulus. The results were also compared well with the published works of different authors for different type of rocks.
APA, Harvard, Vancouver, ISO, and other styles
8

Panesar, D. K., and S. E. Chidiac. "Ultrasonic pulse velocity for determining the early age properties of dry-cast concrete containing ground granulated blast-furnace slag." Canadian Journal of Civil Engineering 34, no. 5 (May 1, 2007): 682–85. http://dx.doi.org/10.1139/l07-039.

Full text
Abstract:
This study evaluates the potential use of ultrasonic pulse velocity (UPV) for determining the early age compressive strength of dry-cast concrete containing varying percentages of ground granulated blast-furnace slag (GGBFS). The proposed approach includes computing the dynamic elastic modulus from UPV measurements, evaluating the static elastic modulus from experimentally measured dynamic-to-static elastic modulus ratios, and determining the compressive strength from the static elastic modulus using formulae suggested in ACI-363. The early age strengths of dry-cast concrete containing varying amount of GGBFS, which are determined using UPV measurements, are in good agreement with the measured strength. The evaluation is also extended to include five datasets reported in published literature for concrete containing varying types and amounts of mineral admixtures. Key words: concrete, compressive strength, dry cast, early age properties, ground granulated blast-furnace slag (GGBFS), ultrasonic pulse velocity (UPV).
APA, Harvard, Vancouver, ISO, and other styles
9

Kurakina, Elena, Sergej Evtyukov, and Jaroslav Rajczyk. "Diagnostic assessment of an impact of static and dynamic vehicle loads on covering of roadway." MATEC Web of Conferences 334 (2021): 01014. http://dx.doi.org/10.1051/matecconf/202133401014.

Full text
Abstract:
The article presents diagnostic possibilities for testing covering of roadway through dynamic and static loading units. The article presents features, advantages and principal characteristics of the equipment: die unit, Dina-3M, UDN-NK, Dynatest unit. The main parameters of the dynamic impact units. The article also presents results of tests by dynamic and static loading, defines «flexural bowls», elastic module and the coefficients of reduction of the elastic modulus to the static modulus.
APA, Harvard, Vancouver, ISO, and other styles
10

Nakamura, Masatoshi, Shigeru Sato, Ryosuke Kiyono, Nobushige Takahashi, and Tomoichi Yoshida. "Effect of Rest Duration Between Static Stretching on Passive Stiffness of Medial Gastrocnemius Muscle In Vivo." Journal of Sport Rehabilitation 29, no. 5 (July 1, 2020): 578–82. http://dx.doi.org/10.1123/jsr.2018-0376.

Full text
Abstract:
Context: In clinical and sports settings, static stretching (SS) is usually performed to increase range of motion (ROM) and decrease passive muscle stiffness. Recently, the shear elastic modulus was measured by ultrasonic shear wave elastography as an index of muscle stiffness. Previous studies reported that the shear elastic modulus measured by ultrasound shear wave elastography decreased after SS, and the effects of SS on shear elastic modulus were likely affected by rest duration between sets of SS. Objective: To investigate the acute effects of SS with different rest durations on ROM and shear elastic modulus of gastrocnemius and to clarify whether the rest duration between sets of SS decreases the shear elastic modulus. Design: A randomized, repeated-measures experimental design. Setting: University laboratory. Participants: Sixteen healthy males volunteered to participate in the study (age 21.3 [0.8] y; height 171.8 [5.1] cm; weight 63.1 [4.5] kg). Main Outcome Measures: Each participant underwent 3 different rest interval durations during SS (ie, long rest duration: 90 s; normal rest duration: 30 s; and short rest duration: 10 s). This SS technique was repeated 10 times, thus lasting a total of 300 seconds with different rest durations in each protocol. The dorsiflexion ROM and shear elastic modulus were measured before and after SS. Results: Our results revealed that dorsiflexion ROM and shear elastic modulus were changed after 300-second SS; however, no effects of the rest duration between sets of SS were observed. Conclusions: In terms of decreasing the shear elastic modulus, clinicians and coaches should not focus on the rest duration when SS intervention is performed.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Static elastic modulus"

1

Merli, Francesca. "Static and dynamic elastic moduli of historical brick masonry subjected to freeze-thaw cycles and to different moisture amounts." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

Find full text
Abstract:
Environment conditions and moisture presence in masonry structures may affect durability or even mechanical properties of architectural heritage. Among all the deterioration causes, the degradation of historic masonry by freeze-thaw cycles and different moisture amount are considered to evaluate their influence on elastic properties. Therefore, two experimental campaigns were carried out in the present study. The first one was performed at the Dept. of Geotechincal Engineering at Tongji University, to assess the influence of freeze-thaw cycles on elastic modulus of historic Chinese brick. The static elastic modulus was evaluated from the compressive strength test on masonry specimens subjected to different numbers of freeze-thaw cycles. Moreover, strength decay of the masonry was investigated, also analysing data obtained during ultrasonic test (UPV, non-destructive test). The aim of this step was to obtain the dynamic elastic modulus. Thanks to interpolation of the obtained data it was possible to improve the knowledge of the Elasticity modulus’ reduction of historic masonry subjected to freeze-thaw cycles. The second experimental campaign was performed at DICAM, University of Bologna, on ancient Chinese and Italian bricks, to assess the sensitivity of dynamic elastic modulus to moisture amount. In particular the influence of water presence in the material pores on the UPV measurements. The close relationship between the ultrasonic pulse velocity and the moisture content was investigated on brick cores in dry, 50% saturated and saturated conditions. Practical value and one of the main contribution of the experiments was the investigation of external factor and intrinsic properties of porous materials which directly influence the ultrasonic pulse velocity test.
APA, Harvard, Vancouver, ISO, and other styles
2

Franceschelli, Stefano. "Experiments on Chinese historical brick and masonry to evaluate their physical and mechanical properties after freeze-thaw cycles." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

Find full text
Abstract:
Ultrasonic Pulse Velocity (UPV) and Rebound test as non-destructive techniques may effectively contribute to in situ analysis of bricks and masonries elements for the restoration, rehabilitation and strengthening of historic buildings. Fired-clay bricks were commonly used in buildings in ancient China, but there is few knowledge on their behaviour in environmental conditions. Moisture is one of the main factors that cause deterioration in historic building, in particular in areas with natural freeze-thaw cycles. In this work, two laboratory experiments were carried out, at Tongji University, China, and DICAM Department of Bologna University, Italy, respectively. Fired-clay bricks about 200 years old were collected from demolished buildings in Changzhi City in Shanxi Province, belonging to the Yellow River Region, where the climate involves natural freeze-thaw cycles. The aim was to evaluate how the frost damage changes the physical and mechanical properties of Chinese historical bricks and masonries. Several non-destructive methods were used, focusing on the effectiveness of Ultrasonic Pulse Velocity (UPV) for evaluating physical and mechanical properties of Chinese historic grey bricks and masonries. Destructive tests were also used to evaluate compressive strength and static elastic modulus. The samples showed a reduction of their properties due to freeze-thaw cycles. The presence of water affected the values of the analysed parameters, leading to a decrease of UPV. The trend determined by these methods can be used to assess the uniformity of bricks and to detect areas of poor quality or deteriorated masonry structures.
APA, Harvard, Vancouver, ISO, and other styles
3

Vrba, Pavel. "Kalibrace nepřímých metod pro zjišťování vlastností alkalicky aktivovaných betonů." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226970.

Full text
Abstract:
This work solves creation of calibration relations to determine cube compressive strength, dynamic and static elastic modulus of alkali-activated concrete by non-destructive methods. Alkali-activated concrete is spoken of as a new material used in civil engineering. It shows different properties than normal concrete based on Portland cement. That's why the modification of common calibration relation seems necessary. Fresh concrete was made in the concrete plan ŽPSV a.s., Uherský Ostroh in three mixtures and always in the number of 18 cubes and 3 prisms. The samples were tested by impact hammer Schmidt type L, type N, SilverSchmidt PC-N and by ultrasound in 6 time periods of three specimens. After that, the cube compressive strength was determined. Status of static elastic modulus was determined in a time period of 28 days. The results are calibration relations to determine the progress of compressive strength and modulus of elasticity for each method and their combination.
APA, Harvard, Vancouver, ISO, and other styles
4

Holbová, Monika. "Diagnostika železobetonové konstrukce." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265583.

Full text
Abstract:
This diploma thesis deals with the building survey and diagnosis of the station building of a railway station in Vítkovice. It describes process of survey and evaluation of existing reinforced concrete structures and used diagnostic methods. The survey of the object is described in the practical part of the thesis, which involves location of testing spots, taking the samples for testing from the structure, laboratory testing and evaluation of the results – determination of compressive strength of concrete with classification of concrete and elastic modulus. The last part includes static calculation of selected part of the structure.
APA, Harvard, Vancouver, ISO, and other styles
5

Borgomano, Jan. "Dispersion des modules élastiques de carbonates saturés : étude expérimentale et modélisation." Thesis, Paris Sciences et Lettres (ComUE), 2018. http://www.theses.fr/2018PSLEE021/document.

Full text
Abstract:
Pour les roches saturées, la comparaison entre les mesures ultrasoniques (1 MHz) au laboratoire et les mesures sismiques (100 Hz) ou de diagraphie (10 kHz) sur le terrain n’est pas directe à cause de la dispersion des vitesses des ondes. Les mécanismes impliqués dans la dépendance en fréquence sont les écoulements de fluides à différentes échelles provoqués par le passage de l’onde. La dispersion et l’atténuation des modules élastiques de roches carbonatées ont été étudiées expérimentalement. Les calcaires étudiés sont : un Lavoux, un Indiana intact et craqué thermiquement, un calcaire Urgonien de Provence (Rustrel), et un coquina pré-sel du Congo. Les mesures ont été faites sur une large gamme de fréquence, en combinant les techniques d’oscillations forcées (10-3 to 102 Hz) et ultrasoniques (1 MHz) dans une presse triaxiale, pour différentes pressions effectives. Le forçage peut être hydrostatique pour mesurer un module d’incompressibilité, ou axial pour mesurer le module de Young et le coefficient de Poisson. Pour étudier l’effet de la viscosité, les mesures ont été faites en condition sèche, puis saturée en glycérine et en eau. Le drainage global et le mécanisme d’écoulement crack-pore ont été caractérisés, en termes d’amplitude de dispersion, d’atténuation viscoélastique, et de fréquence de coupure. Pour nos échantillons, la théorie de Biot-Gassmann s’est montrée valide pour les fréquences sismiques (10-100 Hz) sauf pour l’Indiana craqué thermiquement. La dispersion liée à des écoulements crackspores a été observée pour tous les échantillons sauf le Lavoux. Les fréquences de coupures de ceux-ci sont toutes dans la gamme des fréquences des diagraphies (10 kHz) pour des conditions de saturation en eau. Un modèle simple, combinant poroélasticité et milieux effectifs, a été développé pour prédire la dispersion des modules sur toute la gamme de fréquence, et s’est montré généralement en accord avec les résultats expérimentaux
For fluid-saturated rocks, comparing ultrasonic measurements (1 MHz) in the laboratory and seismic (100 Hz) or logging (10 kHz) measurements in the field is not straightforward due to dispersion of the bodywave velocities. The frequency-dependent mechanisms involved are wave-induced fluid flows that occur at different scales. The dispersion and the attenuation of the elastic moduli of four fluid-saturated carbonate rocks have been studied experimentally. The selected limestones were a Lavoux, an intact and thermally cracked Indiana, a Urgonian limestone from Provence (Rustrel), and a presalt coquina from offshore Congo. Measurements were done over a large frequency range, by the combination of forced oscillations (10-3 to 102 Hz) and ultrasonic measurements (1 MHz) in a triaxial cell, at various effective pressures. The forced oscillations were either hydrostatic to deduce the bulk modulus, or axial to deduce Young’s modulus and Poisson’s ratio. The measurements were done in dry-, glycerinand water-saturated conditions to investigate the effect of viscosity. For all our samples, the global drainage and the squirt-flow mechanisms were characterized experimentally, in terms of amplitude of dispersion, amount of viscoelastic attenuation, and cut-off frequencies. Biot- Gassmann’s theory was found to be valid at seismic frequencies (10-100 Hz) for all the samples except the thermally cracked Indiana. Squirt-flow transitions were observed for all the samples, except the Lavoux. The cut-off frequencies were all in the range of logging frequencies (10 kHz), for watersaturated conditions. A simple model, combining poroelasticity and the noninteraction approximation effective medium, was developed to predict the dispersion of the moduli over the whole frequency range, and was generally in agreement with the experimental results
APA, Harvard, Vancouver, ISO, and other styles
6

Nunzi, Edoardo. "Effetto di alcuni fattori di processo sulla risposta statica di provini realizzati mediante FDM." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

Find full text
Abstract:
Il presente elaborato ha lo scopo di analizzare l’effetto di alcuni parametri di stampa della tecnologia Fused Deposition Modeling (modellazione a deposizione fusa FDM) sulle proprietà meccaniche dell’ABS TITAN XTM. Il lavoro di tesi si è particolarmente focalizzato sui parametri di stampa: spessore del filamento (0,2 mm e 0,3 mm), numero di contour lines (1, 4 o 7), angolo di orientamento (90°, +180°/-180°, 45° /-45°). Combinando tutte le possibilità di stampa, si ottengono 18 tipologie di provini per un totale di 90 provini complessivi studiati con la prova di trazione. Ogni tipologia considerata in laboratorio infatti ha richiesto, come previsto dalla norma consolidata ASTM D638, la ripetizione su 5 provini. La stampa dei provini, realizzata con una stampante Delta Kossel autocostruita, ha rappresentato una fase dell’elaborato finale di laurea. Alla stampa e alla rottura dei provini, è seguita una prima elaborazione analitica dei dati sperimentali finalizzata alla determinazione delle curve tensione-deformazione e di tutte le grandezze connesse alla prova a trazione, in particolare: tensione di rottura, modulo elastico, limite di snervamento e deformazione a rottura. Tali quattro grandezze sono poi state analizzate statisticamente attraverso il modello ANOVA a 3 e a 2 fattori con ripetizioni: ciò ha consentito di stabilire la significatività dei fattori di stampa esaminati. L’elaborato è organizzato in tre parti nelle quali vengono presentate: generalità sulla stampa 3D, materiali e metodi, elaborazione e analisi dei risultati statistici.
APA, Harvard, Vancouver, ISO, and other styles
7

Fenollosa, Artés Felip. "Contribució a l'estudi de la impressió 3D per a la fabricació de models per facilitar l'assaig d'operacions quirúrgiques de tumors." Doctoral thesis, Universitat Politècnica de Catalunya, 2019. http://hdl.handle.net/10803/667421.

Full text
Abstract:
La present tesi doctoral s’ha centrat en el repte d’aconseguir, mitjançant Fabricació Additiva (FA), models per a assaig quirúrgic, sota la premissa que els equips per fer-los haurien de ser accessibles a l’àmbit hospitalari. L’objectiu és facilitar l’extensió de l’ús dels prototips com a eina de preparació d’operacions quirúrgiques, transformant la pràctica mèdica actual de la mateixa manera que en el seu moment ho van fer tecnologies com les que van facilitar l’ús de radiografies. El motiu d’utilitzar FA, en lloc de tecnologies més tradicionals, és la seva capacitat de materialitzar de forma directa les dades digitals obtingudes de l’anatomia del pacient mitjançant sistemes d’escanejat tridimensional, fent possible l’obtenció de models personalitzats. Els resultats es centren en la generació de nou coneixement sobre com aconseguir equipaments d’impressió 3D multimaterials accessibles que permetin l’obtenció de models mimètics respecte als teixits vius. Per facilitar aquesta buscada extensió de la tecnologia, s’ha focalitzat en les tecnologies de codi obert com la Fabricació per Filament Fos (FFF) i similars basades en líquids catalitzables. La recerca s’alinea dins l’activitat de desenvolupament de la FA al CIM UPC, i en aquest àmbit concret amb la col·laboració amb l’Hospital Sant Joan de Déu de Barcelona (HSJD). El primer bloc de la tesi inclou la descripció de l’estat de l’art, detallant les tecnologies existents i la seva aplicació a l’entorn mèdic. S’han establert per primer cop unes bases de caracterització dels teixits vius -sobretot tous- per donar suport a la selecció de materials que els puguin mimetitzar en un procés de FA, a efectes de millorar l’experiència d’assaig dels cirurgians. El caràcter rígid dels materials majoritàriament usats en impressió 3D els fa poc útils per simular tumors i altres referències anatòmiques. De forma successiva, es tracten paràmetres com la densitat, la viscoelasticitat, la caracterització dels materials tous a la indústria, l’estudi del mòdul elàstic de teixits tous i vasos, la duresa d’aquests, i requeriments com l’esterilització dels models. El segon bloc comença explorant la impressió 3D mitjançant FFF. Es classifiquen les variants del procés des del punt de vista de la multimaterialitat, essencial per fer models d’assaig quirúrgic, diferenciant entre solucions multibroquet i de barreja al capçal. S’ha inclòs l’estudi de materials (filaments i líquids) que serien més útils per mimetitzar teixits tous. Es constata com en els líquids, en comparació amb els filaments, la complexitat del treball en processos de FA és més elevada, i es determinen formes d’imprimir materials molt tous. Per acabar, s’exposen sis casos reals de col·laboració amb l’HJSD, una selecció d’aquells en els que el doctorand ha intervingut en els darrers anys. L’origen es troba en la dificultat de l’abordatge d’operacions de resecció de tumors infantils com el neuroblastoma, i a la iniciativa del Dr. Lucas Krauel. Finalment, el Bloc 3 té per objecte explorar nombrosos conceptes (fins a 8), activitat completada al llarg dels darrers cinc anys amb el suport dels mitjans del CIM UPC i de l’activitat associada a treballs finals d’estudis d’estudiants de la UPC, arribant-se a materialitzar equipaments experimentals per validar-los. La recerca ampla i sistemàtica al respecte fa que s’estigui més a prop de disposar d’una solució d’impressió 3D multimaterial de sobretaula. Es determina que la millor via de progrés és la de disposar d’una pluralitat de capçals independents a fi de capacitar la impressora 3D per integrar diversos conceptes estudiats, materialitzant-se una possible solució. Cloent la tesi, es planteja com seria un equipament d’impressió 3D per a models d’assaig quirúrgic, a fi de servir de base per a futurs desenvolupaments.
La presente tesis doctoral se ha centrado en el reto de conseguir, mediante Fabricación Aditiva (FA), modelos para ensayo quirúrgico, bajo la premisa que los equipos para obtenerlos tendrían que ser accesibles al ámbito hospitalario. El objetivo es facilitar la extensión del uso de modelos como herramienta de preparación de operaciones quirúrgicas, transformando la práctica médica actual de la misma manera que, en su momento, lo hicieron tecnologías como las que facilitaron el uso de radiografías. El motivo de utilizar FA, en lugar de tecnologías más tradicionales, es su capacidad de materializar de forma directa los datos digitales obtenidos de la anatomía del paciente mediante sistemas de escaneado tridimensional, haciendo posible la obtención de modelos personalizados. Los resultados se centran en la generación de nuevo conocimiento para conseguir equipamientos de impresión 3D multimateriales accesibles que permitan la obtención de modelos miméticos respecto a los tejidos vivos. Para facilitar la buscada extensión de la tecnología, se ha focalizado en las tecnologías de código abierto como la Fabricación por Hilo Fundido (FFF) y similares basadas en líquidos catalizables. Esta investigación se alinea dentro de la actividad de desarrollo de la FA en el CIM UPC, y en este ámbito concreto con la colaboración con el Hospital Sant Joan de Déu de Barcelona (HSJD). El primer bloque de la tesis incluye la descripción del estado del arte, detallando las tecnologías existentes y su aplicación al entorno médico. Se han establecido por primera vez unas bases de caracterización de los tejidos vivos – principalmente blandos – para dar apoyo a la selección de materiales que los puedan mimetizar en un proceso de FA, a efectos de mejorar la experiencia de ensayo de los cirujanos. El carácter rígido de los materiales mayoritariamente usados en impresión 3D los hace poco útiles para simular tumores y otras referencias anatómicas. De forma sucesiva, se tratan parámetros como la densidad, la viscoelasticidad, la caracterización de materiales blandos en la industria, el estudio del módulo elástico de tejidos blandos y vasos, la dureza de los mismos, y requerimientos como la esterilización de los modelos. El segundo bloque empieza explorando la impresión 3D mediante FFF. Se clasifican las variantes del proceso desde el punto de vista de la multimaterialidad, esencial para hacer modelos de ensayo quirúrgico, diferenciando entre soluciones multiboquilla y de mezcla en el cabezal. Se ha incluido el estudio de materiales (filamentos y líquidos) que serían más útiles para mimetizar tejidos blandos. Se constata como en los líquidos, en comparación con los filamentos, la complejidad del trabajo en procesos de FA es más elevada, y se determinan formas de imprimir materiales muy blandos. Para acabar, se exponen seis casos reales de colaboración con el HJSD, una selección de aquellos en los que el doctorando ha intervenido en los últimos años. El origen se encuentra en la dificultad del abordaje de operaciones de resección de tumores infantiles como el neuroblastoma, y en la iniciativa del Dr. Lucas Krauel. Finalmente, el Bloque 3 desarrolla numerosos conceptos (hasta 8), actividad completada a lo largo de los últimos cinco años con el apoyo de los medios del CIM UPC y de la actividad asociada a trabajos finales de estudios de estudiantes de la UPC, llegándose a materializar equipamientos experimentales para validarlos. La investigación amplia y sistemática al respecto hace que se esté más cerca de disponer de una solución de impresión 3D multimaterial de sobremesa. Se determina que la mejor vía de progreso es la de disponer de una pluralidad de cabezales independientes, a fin de capacitar la impresora 3D para integrar diversos conceptos estudiados, materializándose una posible solución. Para cerrar la tesis, se plantea cómo sería un equipamiento de impresión 3D para modelos de ensayo quirúrgico, a fin de servir de base para futuros desarrollos.
APA, Harvard, Vancouver, ISO, and other styles
8

Bakhorji, Aiman M. "Laboratory measurements of static and dynamic elastic properties in carbonate." Phd thesis, 2010. http://hdl.handle.net/10048/908.

Full text
Abstract:
Thesis (Ph. D.)--University of Alberta, 2010.
Title from pdf file main screen (viewed on Mar. 18, 2010). A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Geophysics, Department of Physics, University of Alberta. Includes bibliographical references.
APA, Harvard, Vancouver, ISO, and other styles
9

Chiu, Sheng-Chun, and 邱勝峻. "A study on test methods for static and dynamic elastic modulus of soil-cement specimens." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/32963771321723420739.

Full text
Abstract:
碩士
國立高雄第一科技大學
營建工程研究所
101
The study conducts static and dynamic tests on soil-cement samples mixed by three levels of cement contents: 10%, 20% and 30%. Test results are used to identify the relevancy of mechanical properties. Dynamic testing follows a CNS 1239-A3052 method for determining longitudinal natural frequencies of ordinary concrete samples; excitation of soil-cement samples are introduced by small steel balls and waveforms recorded by accelerometer in time are analyzed by Fourier analysis to generate the dynamic modulus of elasticity. Static testing is based on ASTM D4832-02 method for determining the compressive strength of controlled low strength materials; extensometers are used to measure deformations, and the slope of load-deformation curves by linear regression produces the static modulus of elasticity. Test equipment need be examined in advance with standard samples. Dynamic test procedure is validated by examining the natural frequency of various steel bars having given modulus of elasticity and density. Static test procedure is validated by standard load cells and Vernier scale. The test results for all soil-cement samples indicate that dynamic test is more consistent and dynamic modulus of elasticity is higher than static modulus, with their difference reducing when cement ratios increase.
APA, Harvard, Vancouver, ISO, and other styles
10

Grills, Frank. "Static and dynamic elastic modulus testing of concrete and its constituents and comparison of results with theoretical models." Thesis, 2015. http://hdl.handle.net/10539/16707.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Static elastic modulus"

1

Dutt, Pravir. A spline-based parameter estimation technique for static models of elastic structures. Hampton, Va: ICASE, 1986.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Shlomo, Ta'asan, and Institute for Computer Applications in Science and Engineering., eds. A spline-based parameter estimation technique for static models of elastic structures. Hampton, VA: Institute for Computer Applications in Science and Engineering, NASA Langley Research Center, 1986.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Shlomo, Taasan, and Institute for Computer Applications in Science and Engineering, eds. A spline-based parameter estimation technique for static models of elastic structures. Hampton, VA: Institute for Computer Applications in Science and Engineering, NASA Langley Research Center, 1986.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

A spline-based parameter estimation technique for static models of elastic structures. Hampton, VA: Institute for Computer Applications in Science and Engineering, NASA Langley Research Center, 1986.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Shlomo, Taasan, and Institute for Computer Applications in Science and Engineering, eds. A spline-based parameter estimation technique for static models of elastic structures. Hampton, VA: Institute for Computer Applications in Science and Engineering, NASA Langley Research Center, 1986.

Find full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Static elastic modulus"

1

Anderson, Don L., and Orson L. Anderson. "The bulk modulus-volume relationship for oxides." In Elastic Properties and Equations of State, 283–89. Washington, D. C.: American Geophysical Union, 1988. http://dx.doi.org/10.1029/sp026p0283.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Anderson, Orson L., and John E. Nafe. "The bulk modulus-volume relationship for oxide compounds and related geophysical problems." In Elastic Properties and Equations of State, 153–65. Washington, D. C.: American Geophysical Union, 1988. http://dx.doi.org/10.1029/sp026p0153.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Weidner, Donald J., Jay D. Bass, A. E. Ringwood, and William Sinclair. "The single-crystal elastic moduli of stishovite." In Elastic Properties and Equations of State, 459–65. Washington, D. C.: American Geophysical Union, 1988. http://dx.doi.org/10.1029/sp026p0459.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Gafurov, Ulmas. "Modelling of Elastic Modulus and Molecular Structure Interrelationship of an Oriented Crystalline Polymer." In Solid State Phenomena, 119–22. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/3-908451-56-6.119.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Anderson, Orson L. "Derivation of Wachtman's equation for the temperature dependence of the elastic moduli of oxide compounds." In Elastic Properties and Equations of State, 166–70. Washington, D. C.: American Geophysical Union, 1988. http://dx.doi.org/10.1029/sp026p0166.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Garrett, Steven L. "Elasticity of Solids." In Understanding Acoustics, 179–233. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44787-8_4.

Full text
Abstract:
Abstract If a solid is initially at rest and equal and opposing forces are applied to that object, Newton’s Second Law guarantees that the object will remain at rest because the net force on the sample is zero. If that object is an elastic solid, then those forces will cause the solid to deform by an amount that is directly proportional to those applied forces. When the forces are removed, the sample will return to its original shape and size. That reversibility is the characteristic that is required if we say the behavior of the solid is “elastic.” This chapter will quantify the elastic behavior of solids by introducing the concepts of stress and strain and expressing their linear relationship through the definition of elastic moduli that depend only upon the material and the nature of the deformation and not upon the shape of the object. Those concepts allow us to generalize Hooke’s law. As before, the combination of a linear equation of state with Newton’s Second Law will now describe wave motion in solids. The introduction of a relaxation time, through the Maxwell model, will let these results be generalized to viscoelastic materials and then be applied to rubber vibration isolators.
APA, Harvard, Vancouver, ISO, and other styles
7

Oueslati, Abdelbacet, Géry de Saxcé, and Simon Hasbroucq. "Inelastic Behavior of a Two-Bar System with Temperature-Dependent Elastic Modulus Under Cyclic Thermomechanical Loadings." In Limit State of Materials and Structures, 145–63. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-5425-6_8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Aleixo, Giorgia T., C. R. M. Afonso, A. A. Coelho, and R. Caram. "Effects of Omega Phase on Elastic Modulus of Ti-Nb Alloys as a Function of Composition and Cooling Rate." In Solid State Phenomena, 393–98. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/3-908451-49-3.393.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Garrett, Steven L. "Ideal Gas Laws." In Understanding Acoustics, 333–56. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44787-8_7.

Full text
Abstract:
Abstract This is the first chapter to explicitly address fluid media. For springs and solids, Hooke’s law, or its generalization using stress, strain, and elastic moduli provided an equation of state. In fluids, we have an equation of state that relates changes in pressure (stresses) to changes in density (strain). The simplest fluidic equations of state are the Ideal Gas Laws. Our presentation of these laws will combine microscopic models that treat gas atoms as hard spheres with phenomenological (thermodynamic) models that combine the variables that describe the gas with conservation laws that restrict those variables. The combination of microscopic and phenomenological models will give us the important characteristics of gas behavior under isothermal or adiabatic conditions and will provide relationships between gas heat capacities and their constituent particles when augmented with elementary concepts from quantum mechanics. The chapter ends by adding a velocity field to the pressure, temperature, and density, thus providing the equations of hydrodynamics that will guide all of the subsequent development of acoustics in fluids.
APA, Harvard, Vancouver, ISO, and other styles
10

Brotóns, V., S. Ivorra, and R. Tomás. "Correlations between static and dynamic elastic modulus of a calcarenite heated at different temperatures." In Rock Engineering and Rock Mechanics: Structures in and on Rock Masses, 143–48. CRC Press, 2014. http://dx.doi.org/10.1201/b16955-21.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Static elastic modulus"

1

Duboeuf, Francois, Herve Liebgott, Adrian Basarab, Elisabeth Brusseau, Philippe Delachartre, and Didier Vray. "Static mechanical assessment of elastic Young's modulus of tissue mimicking materials used for medical imaging." In 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 2007. http://dx.doi.org/10.1109/iembs.2007.4353073.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Sava, Mihaela, Anton Hadăr, Ioan Părăuşanu, Horia-Alexandru Petrescu, Florin Baciu, and Stănescu Marius Marinel. "Analysis of discontinuities influence on the differences between static and dynamic elastic modulus of composite materials." In INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS 2015 (ICNAAM 2015). Author(s), 2016. http://dx.doi.org/10.1063/1.4952321.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Rae, Philip J., Carl P. Trujillo, Manuel L. Lovato, Mark Elert, Michael D. Furnish, William W. Anderson, William G. Proud, and William T. Butler. "THE YOUNG’S MODULUS OF 1018 STEEL AND 6061-T6 ALUMINIUM MEASURED FROM QUASI-STATIC TO ELASTIC PRECURSOR STRAIN-RATES." In SHOCK COMPRESSION OF CONDENSED MATTER 2009: Proceedings of the American Physical Society Topical Group on Shock Compression of Condensed Matter. AIP, 2009. http://dx.doi.org/10.1063/1.3294997.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Thoppul, Srinivasa D., and Ronald F. Gibson. "Macromechanical/Micromechanical Characterization of Welds in Aluminum by Combined Experimental/Numerical Approach." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14512.

Full text
Abstract:
In this paper, elastic moduli of both the base metal and weld zone are estimated for aluminum welds by combined experimental/numerical approaches based on vibration testing, static testing and Finite Element (FE) methods. The general approach used is to indirectly determine the elastic properties by combining either experimental modal vibration analysis data or static 3-point bend test data with the corresponding finite element analytical model. Two types of welded joints, A1 6061 arc welded and A1 6111 spot friction welded (SFW) lap joints were considered. Modal vibration characteristics obtained from the experiments were compared with the corresponding FE model results at the macromechanical level, and the weld zone modulus was indirectly determined so as to give the best agreement between predicted and measured modal frequencies. The results indicate a modulus reduction of 15 % to 45 % for the weld zone depending on whether it is two sided or one side arc welded sample, and whether only the first mode or several modes are used, but results are inconclusive for the SFW samples due to uncertainty about modeling of weld zone material and/or geometric properties.
APA, Harvard, Vancouver, ISO, and other styles
5

Mohammed, Jaafar. "NUMERICAL MODELLING FOR CIRCLE TUNNEL UNDER STATIC AND DYNAMIC LOADS (CASE STUDY: COMPARISON IN DIFFERENT OF ELASTIC MODULUS AND TUNNEL DIAMETERS)." In 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017/12/s02.080.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

LIU, Ning, Tong-Tong YANG, Hai-Feng LIU, and Yong-Gang DU. "Influence of Fly Ash Content and Desert Sand Replacement Ratio on the Static Elastic Modulus of Desert Sand High Strength Concrete." In 3rd International Conference on Material Engineering and Application (ICMEA 2016). Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/icmea-16.2016.38.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Sawa, Toshiyuki, and Masahiro Sasaki. "A Stress Analysis of Stepped Lap and Scarf Adhesive Joints Under Static Tensile Loadings." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-80784.

Full text
Abstract:
The stress variations and stress distributions in scarf and stepped-lap adhesive joints of similar adherends under static and impact tensile loadings were analyzed in elastic range using three-dimensional finite element method. The impact loadings were applied to the lower adherend by dropping a weight. The stress distributions in scarf adhesive joints of similar adherends under static tensile loadings were also analyzed using FEM. The effects of Young’s modulus of the adherends, the adhesive thickness, and the angle of the adherends on the stress distributions at the interfaces between the adherends and the adhesive were examined under static loadings. The maximum value of σ1 decreased as young’s modulus of the adhesive increased in the stepped-lap adhesive joints under static loadings. However, the result of the scarf adhesive joints under static loadings was opposite to the above result. The value of σ1 became minimum when the scarf angle was 52°in the scarf adhesive joint. In addition, the experiments to measure the strain response and strain of joints subjected to impact and static tensile loadings were carried out using strain gauges. Fairly good agreements ware found between the numerical and the measured results.
APA, Harvard, Vancouver, ISO, and other styles
8

Sawa, Toshiyuki, and Kohei Ichikawa. "A Stress Analysis and Strength Estimation of Stepped Lap Adhesive Joints Under Static and Impact Tensile Loadings." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-80804.

Full text
Abstract:
The stress variations and stress distributions in stepped-lap adhesive joints of dissimilar adherends under impact tensile loadings were analyzed in elastic range using three-dimensional finite element method. The impact loadings were applied to the lower adherend by dropping a weight. The stress distributions in stepped-lap adhesive joints of dissimilar adherends under static tensile loadings were also analyzed using FEM. The effects of Young’s modulus of the adherends, the adhesive thickness and the number of butted steps of adherents ware examined under both impact and static loadings. As the results, The maximum value of stress σ1 increased as Young’s modulus of the adherends increased for the impact loadings. The maximum value of stress σ1 increased as the numbers of steps in the adherends increased for the static loadings. In addition, the experiments to measure the strain response of joints subjected to impact tensile loadings were carried out using strain gauges. A fairly good agreement was found between the numerical and the measured results concerning the strain responses.
APA, Harvard, Vancouver, ISO, and other styles
9

Yang, Zhaochun, Qing-Ming Wang, Patrick Smolinski, and Hongbo Yang. "Static Analysis of Thin Film Piezoelectric Micro-Accelerometer Using Analytical and Finite Element Modeling." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41387.

Full text
Abstract:
On-chip microaccelerometers using piezoelectric thin films has attracted much interest due to their simple structure and potentially high sensitivity. However, the relationships between the structure of the microaccelerometer and its performance still need to be further developed in more details. In this paper we present a theoretical model for a microaccelerometer with four suspended flexural PZT/silicon beams and a central proof mass configuration. The model takes into account the effect of device geometry and elastic properties of the piezoelectric film, and is supported by the finite element analysis. The good agreement of the results demonstrates the validity of the modeling assumptions. This study shows that the accelerometer sensitivity decreases with increasing the width and thickness of the bilayer beams, and elastic modulus of the mechanical microstructure, while increasing the length of the beam, increases sensitivity. For a fixed beam thickness, a maximum sensitivity exists for appropriate PZT/Si thickness. In addition, it is found that the sensitivity is also proportional to the magnitude of the input acceleration. The results of this study can be readily applied to for on-chip piezoelectric microaccelerometer design and its structural optimization.
APA, Harvard, Vancouver, ISO, and other styles
10

Hardy, Peter A., Bao Zhang, Dayong Gao, and Richard J. Mitchell. "Measurement of the Shear Modulus of Tissue-Like Materials Using Magnetic Resonance Elastography." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-33657.

Full text
Abstract:
We developed a technology to measure the shear modulus of tissue-like materials using Magnetic Resonance (MR) imaging. In this technique, called MR elastography or MRE, the sample is vibrated at 100–300 Hz while MR images are made. The shear wave generated by the vibration will propagate into the material at a speed proportional to the square root of the shear modulus. We compared the shear modulus of gel samples measured in this way with the modulus derived from a static compression test and assuming the material is linearly elastic. The results show good agreement of the two methods provided the shear modulus of the material is below approximately 10 kPa. Differences in the two measurements are explainable by differences in the compression rate of the two techniques.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Static elastic modulus' for particular source types:
Journal articles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography