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Dissertations / Theses on the topic 'Calculation of strain energy release rate'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Vijayaraghavan, Rajesh. "Statistical estimation of strain energy release rate of delaminated composites." Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4965.

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Thesis (M.S.)--West Virginia University, 2006.<br>Title from document title page. Document formatted into pages; contains xv, 133 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 126-133).

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2

Lai, Yeh-Hung. "The constrained blister - a nearly constant strain energy release rate test for adhesives." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/44077.

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<p>This study developed and analyzed a modification of the blister test permitting nearly constant strain energy release rate testing of adhesive bonds. The work consisted of three parts; (1) development of the testing technique to evaluate strain energy release rate and to record the time dependent nature of the fracture process, (2) numerical analysis of the constrained blister test to determine the applicability of an approximate solution for several materials, and (3) development of an. analytical technique to evaluate the strain energy release rate for relatively stiff specimens.<

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3

Suansuwan, Napa. "Application Of Strain Energy Release Rate To Characterise The Adhesion At Ceramic-Metal Interfaces." Thesis, The University of Sydney, 2001. http://hdl.handle.net/2123/4865.

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4

Chadegani, Alireza. "Strain energy release rate analysis of adhesive-bonded composite joints with a prescribed interlaminar crack." Thesis, Wichita State University, 2008. http://hdl.handle.net/10057/2023.

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Composite materials together with adhesive-bonding have been increasingly used in the aviation industry. Delamination is among the critical failure modes in fiber-reinforced laminated composite structures including adhesive-bonded assemblies. This thesis presents an analytical approach by taking into account the first-ply failure in adhesive-bonded composite joints subjected to axial tension. The ASTM D3165 standard test specimen geometry is followed for model development derivations. The field equations, in terms of displacements within the joint, are formulated by using the first-order, shea

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5

Chadegani, Alireza Yang Charles. "Strain energy release rate analysis of adhesive-bonded composite joints with a prescribed interlaminar crack." A link to full text of this thesis in SOAR, 2008. http://hdl.handle.net/10057/2023.

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6

Le, Thanh Roderic. "ADHESION OF VENEERING PORCELAIN TO ZIRCONIUM DIOXIDE CERAMIC AS DETERMINED BY THE STRAIN ENERGY RELEASE RATE." Thesis, Faculty of Dentistry, 2010. http://hdl.handle.net/2123/5932.

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7

Mokarem, David W. "Environmental Influence on the Bond Between a Polymer Concrete Overlay and an Aluminum Substrate." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/31700.

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Chloride ion induced corrosion of reinforcing steel in concrete bridge decks has become a major problem in the United States. Latex modified concrete (LMC), low slump dense concrete (LSDC) and hot-mix asphalt membranes (HMAM) overlays are currently some of the most used rehabilitation methods. Epoxy coated reinforcing steel (ECR) was developed and promoted as a long term corrosion protection method by the Federal Highway Administration (FHWA). However, recent evidence has suggested that ECR will not provide adequate long term corrosion protection. The Reynolds Metals Company has developed

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8

Salado, Martinez Freddie Antonio. "Assessment of Fracture Resistance of Asphalt Overlays through Heavy Vehicle Simulator and Laboratory Testing: Synthetic Fiber and Rubber Modified SMA Mixes." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/98576.

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Road administrators have to make decisions regarding the maintenance and rehabilitation of many existing jointed Portland Cement Concrete (PCC) pavements in the road network. Since these pavements are in general expensive to rehabilitate, agencies often opt for overlaying the deteriorated PCC pavement with Hot Mix Asphalt (HMA), resulting in a composite pavement. Unfortunately, the tensile stresses and strains at the bottom of the overlay developed from the movement of the joints, which are caused by the traffic and the changes in temperature, will create cracks on the surface known as reflect

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9

Klein, Justin. "A Study of Durability for Elastomeric Fuel Cell Seals and an Examination of Confinement Effects in Elastomeric Joints." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/32666.

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Proton exchange membrane fuel cells typically consist of stacks of membrane electrode assemblies sandwiched between bipolar plates, effectively combining the individual cells in series to achieve the desired voltage levels. Elastomeric gaskets are commonly used between each cell to insure that the reactant gases are isolated; any failure of a fuel cell gasket can cause the reactants to mix, which may lead to failure of the fuel cell. An investigation of the durability of these fuel cell seals was performed by using accelerated characterization methods. A hydrocarbon sealant was tested in five

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10

Zhang, Huiying. "An Evaluation of the Durability of Polymer Concrete Bonds to Aluminum Bridge Decks." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/31655.

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The objective of this study is to evaluate the bond durability of an epoxy-based polymer concrete wearing surface bonded to aluminum bridge decks. In the bridge design, an aluminum alloy bridge deck is used with a polymer concrete wearing surface. A modified mixed mode flexure fracture test was developed to assess the bond durability of specimens aged in the following environmental conditionings: 30Â°C [86Â°F], 98% RH; 45Â°C [113Â°F], 98% RH; 60Â°C [140Â°F], 98% RH; freezing and thawing; salt (NaCl) water soak; and 60Â°C [140Â°F], dry. The exposure times varied from none to twelve months. T

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11

Kulkarni, Anish Niranjan. "Energy and Strength-based Criteria for Intralaminar Crack Growth in Regions with High Stress Gradients." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-87384.

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Cross-ply composite laminates can develop very high density of transverse cracks in the 90-layer under severe thermal and mechanical loading conditions. At such high crack densities, two adjacent cracks start to interact, and a stress gradient is created in the region between these cracks. Due to the presence of high stress gradients, thickness averaging of longitudinal stress becomes obsolete. Thus, a detailed analysis of stress state along the thickness direction becomes necessary to study growth conditions of fiber sized microcracks initiated at the interface between 0-layer and 90-layer. S

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12

Davis, Kedzie. "The effect of cooling rate on toughness and crystallinity in poly(ether ketone ketone) (PEKK)/G30-500 composites." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-09182008-063310/.

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13

Murray, Katie Virginia. "Characterization of the Interfacial Fracture of Solvated Semi-Interpenetrating Polymer Network (S-IPN) Silicone Hydrogels with a Cyclo-Olefin Polymer (COP)." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/31918.

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As hydrogel products are manufactured and used for applications ranging from biomedical to agricultural, it is useful to characterize their behavior and interaction with other materials. This thesis investigates the adhesion between two different solvated semi-interpenetrating polymer network (S-IPN) silicone hydrogels and a cyclo-olefin (COP) polymer through experimental, analytical, and numerical methods.<p> Interfacial fracture data was collected through the application of the wedge test, a relatively simple test allowing for the measurement of fracture properties over time in environments

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14

Güngör, Güven. "Biaxial Load Effects on Fatigue Properties." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19079/.

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This study aims to aid many issues related to fatigue, namely biaxial loading, the definition of the finite geometry correction factor of the stress intensity factor and the understanding of the energy dissipation per fatigue crack growth. In our work, we are using the geometry correction factor definition that uses the ratio of external work introduced to the material. Using different biaxiality ratios varies the external work done, thus makes it possible for us to observe how the geometry correction factor handles this variation. The trend of strain energy release rate per crack growth is a

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15

Scalone, Santiago Andres. "A numerical evaluation of mode I & II damage propagation in composite materials." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/15914/.

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A full numerical evaluation using Abaqus has been done for 2D and 3D Mode I and II delamination propagation (in composite materials). First the theory to explain all the mechanisms that are involved in delamination growth were developed, also the theory that Abaqus uses to solve the delamination process was explained. Furthermore, all the values that have been used were explained in detail, these values are difficult to find. Then, the results were obtained combining the delamination theory with Matlab. The parameters that have been analyzed are: critical strain energy release rate, the most r

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16

Krieger, William E. R. "Cohesive zone modeling for predicting interfacial delamination in microelectronic packaging." Thesis, Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/51888.

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Multi-layered electronic packages increase in complexity with demands for functionality. Interfacial delamination remains a prominent failure mechanism due to mismatch of coefficient of thermal expansion (CTE). Numerous studies have investigated interfacial cracking in microelectronic packages using fracture mechanics, which requires knowledge of starter crack locations and crack propagation paths. Cohesive zone theory has been identified as an alternative method for modeling crack propagation and delamination without the need for a pre-existing crack. In a cohesive zone approach, traction for

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17

Singh, Hitendra Kumar. "Lifetime Prediction and Durability of Elastomeric Seals for Fuel Cell Applications." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/27658.

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Polymer electrolyte membrane (PEM) fuel cell (FC) stacks require elastomeric gaskets for each cell to keep the reactant gases within their respective regions[1]. If any gasket degrades or fails, the reactant gases can leak or mix with each other directly during operation or standby, affecting the overall operation and performance of the FC. The elastomeric gaskets used as FC seals are exposed to a range of environmental conditions, and concurrently, subjected to mechanical compression between the bipolar plates forming the cell. The combination of mechanical stress and environmental exposure m

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18

Narayanaswamy, Nitin. "Adhesive modelling in multi-material structures : Evaluating the strength and fatigue life of adhesive joints." Thesis, Linköpings universitet, Mekanik och hållfasthetslära, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-165507.

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Advancements in material science and manufacturing techniques are enabling the use of lightweight metal alloys and polymer composites in several combinations and shapes for producing more efficient and lightweight structures for automotive applications without compromising strength, stiffness and/or durability. When evaluating the strength of the structure, the joints are of importance. For multi-material structures adhesives are often the best type of joints. However, traditional finite element methods using stress criteria cannot accurately predict the failure of these adhesive joints under

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19

Guraydin, Alec D. "Analysis of Bimetallic Adhesion and Interfacial Toughness of Kinetic Metallization Coatings." DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/979.

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Due to their ability to confer enhanced surface properties without compromising the properties of the substrate, coatings have become ubiquitous in heavy industrial applications for corrosion, wear, and thermal protection, among others. Kinetic Metallization (KM), a solid-state impact consolidation and coating process, is well-suited for depositing industrial coatings due to its versatility, low substrate heat input, and low cost. The ability of KM coatings to adhere to the substrate is determined by the quality of the interface. The purpose of this study is to develop a model to predict the i

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20

Guan, Youliang. "Crack path selection and shear toughening effects due to mixed mode loading and varied surface properties in beam-like adhesively bonded joints." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/24905.

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Structural adhesives are widely used with great success, and yet occasional failures can occur, often resulting from improper bonding procedures or joint design, overload or other detrimental service situations, or in response to a variety of environmental challenges. In these situations, cracks can start within the adhesive layer or debonds can initiate near an interface. The paths taken by propagating cracks can affect the resistance to failure and the subsequent service lives of the bonded structures. The behavior of propagating cracks in adhesive joints remains of interest, including wh

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21

Parvatareddy, Hari. "Durability of Polyimide Adhesives and Their Bonded Joints for High Temperature Applications." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/29554.

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The objective of this study was to evaluate and develop an understanding of durability of an adhesive bonded system, for application in a future high speed civil transport (HSCT) aircraft structure. The system under study was comprised of Ti-6Al-4V metal adherends and a thermosetting polyimide adhesive, designated as FM-5, supplied by Cytec Engineered Materials, Inc. An approach based on fracture mechanics was employed to assess Ti-6Al-4V/FM-5 bond durability. Initially, wedge tests were utilized to find a durable surface pretreatment for the titanium adherends. Based on an extensive scree

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22

Pohlit, David Joseph. "Dynamic Mixed-Mode Fracture of Bonded Composite Joints for Automotive Crashworthiness." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/33837.

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An experimental evaluation of the mixed-mode fracture behavior of bonded composite joints is presented. Commonly used experimental techniques for characterizing the mode I, mixed-mode I/II, mode II, and mode III fracture behavior have been employed for the purpose of developing a fracture envelope to be utilized in the automotive design process. These techniques make use of such test geometries as the double cantilever beam (DCB), asymmetric double cantilever beam (ADCB), single-leg bend (SLB), end-loaded split (ELS), and split cantilever beam (SCB) specimens. Symmetric versions of the DCB,

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23

Vodička, Vít. "Interlaminární lomová houževnatost vláknových kompozitních materiálů s polymerní matricí." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231461.

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Cílem této diplomové práce je lépe porozumět konceptu únavového poškození damage tolerance zmapováním všech možných vlivů na lomovou houževnatost vláknového kompozitu s polymerní matricí. Toho je dosaženo provedením zkoušek za různých podmínek (např. změna parametrů měření, mód zatížení, pořadí vrstev a materiál) a monitorováním odlišností v šíření trhliny. Na základě dat získaných během těchto testů je určena lomová houževnatost. Potenciální rozdíly jsou zkonzultovány a porovnány s ostatními vzorky.

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24

Lin, Y. "Optimum design for sustainable 'green' overlays : controlling flexural failure." Thesis, Coventry University, 2014. http://curve.coventry.ac.uk/open/items/b5ba73e5-9cb8-4a0b-ac99-c53b3c3e54ed/1.

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The target of the ‘Green Overlays’ research was a cost effective, minimal disruption, sustainable and environmentally friendly alternative to the wholesale demolition, removal and complete reconstruction of the existing structural concrete pavement. The important problem of flexural resistance for strengthening concrete pavements with structural overlays has been scrutinised. A new mix design method for steel fibre reinforced, roller compacted, polymer modified, bonded concrete overlay has been proposed. The mixes developed were characterized of high flexural strength and high bond strength wi

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25

Su, Wei-Bo, and 蘇威博. "Strain Energy Release Rate in a multi-layer beam with intetrfacial crack." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/20190069109729446381.

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碩士<br>元智大學<br>機械工程學系<br>91<br>Multi-layer structures are common in electronic package especially for the micro devices manufactured Via the semi-conductor processes or MEMS processes. Interfacial crack due to the delamination significantly weakens the multi-layer structure. It is desired to understand the interfacial fracture properties of the electronic packaging materials. In this research, four specimens named Doubled Cantilever Beam (DCB), End-Notched Flexure (ENF), Four-Point-Bending, and Three-Point-Bending are proposed to investigate the fracture toughness associated with modeⅠ,modeⅡ an

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26

Venkatesha, K. S. "Finite Element Estimates Of Strain Energy Release Rate Components At Interface Cracks." Thesis, 1995. https://etd.iisc.ac.in/handle/2005/1860.

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27

Venkatesha, K. S. "Finite Element Estimates Of Strain Energy Release Rate Components At Interface Cracks." Thesis, 1995. http://etd.iisc.ernet.in/handle/2005/1860.

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28

Lin, Chin-Hsien, and 林志賢. "Thermal Stress Analysis and Strain Energy Release Rate in a Multi-layer Beam." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/05811773462538380020.

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碩士<br>元智大學<br>機械工程學系<br>94<br>Multi-layer structures are common in electronic package especially for the micro devices manufactured Via the semi-conductor processes or MEMS processes. As the multi-layer structures subject to uniform temperature change, the thermal stresses are induced due to the mismatch of the coefficients of thermal expansion between the adjacent layers. In this investigation, the longitudinal thermal stresses in the middle region of a bi-layer beam and a tri-layer beam are derived basing on the Euler-Bernoulli beam theory. The strain energy release rate of a bi-layer beam a

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29

Zhuang, Linqi. "Effects of Voids on Delamination Growth in Composite Laminates under Compression." Thesis, 2012. http://hdl.handle.net/1969.1/148385.

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Polymer matrix composites are widely used as structural components in the aerospace industry and wind turbine industry etc. to take advantage of their unique mechanical properties and weight saving ability. Although there have been considerable developments in analyzing delamination growth and effects of voids on certain mechanical properties of composites, none of the present literatures investigates the effects of voids on delamination growth under compression. In this research, a parametric study is performed to investigate the effects of voids on delamination growth in composite laminates

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30

Juang, Kai-Tsahn, and 莊鎧燦. "The Evaluation of Mode III Strain Energy Release Rate and Shear Moduli Measurement in Thick Composite Laminates." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/89643193250743559391.

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31

Akdag, Selahattin. "Experimental investigation of damage evolution during strain burst in brittle rocks for deep mines." Thesis, 2019. http://hdl.handle.net/2440/120726.

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The increasing demand for resources and depletion of near ground mineral resources caused deeper mining operations under high-stress and high-temperature rock mass conditions. As a results of this, strain burst, which is the sudden and violent release of stored strain energy during dynamic brittle failure of rocks, has become more prevalent and created considerable safety risks damaging underground infrastructures. This research focuses on the development of experimental methodologies to better understand the fundamental knowledge concerning the failure mechanism of strain burst and the influe

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