Relevant bibliographies by topics / Joint shear strength

Contents

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

Academic literature on the topic 'Joint shear strength'

Author: Grafiati
Published: 4 June 2021
Last updated: 20 June 2025

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Journal articles on the topic "Joint shear strength"

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Chen, Chao, Huiyang Zhang, Hao Peng, Xiangkun Ran, and Qing Pan. "Investigation of the Restored Joint for Aluminum Alloy." Metals 10, no. 1 (2020): 97. http://dx.doi.org/10.3390/met10010097.

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In recent years, the mechanical clinching method plays an increasingly important role in the building of thin-walled structures. The clinched joint can be employed to join the lightweight materials. Compared with other joining methods, the clinched joint has better mechanical behavior. However, the clinched joint may be deformed during use when it bears a high shear force. In this research, a process to join aluminum alloy and restore deformed joint was proposed and investigated. The clinched joint was deformed in the deforming process. Then, a customized rivet and two flat restoring tools were utilized for restoring the deformed joint to join aluminum alloy. Different restoring forces such as 45, 40, 35, 30, 25, and 20 kN were employed to produce diverse restored joints. Some shearing tests on the restored joint were utilized for understanding joint material flow, mode of failure, thickness of neck, shear strength, and absorption of energy. The thickness of neck can be increased in restoring process, which contributes to improve the shear strength. The rivet embedded in a pit also helps restored joint bear shear force, so all of the restored joints have higher absorption of energy and shear strength than the clinched joints. The restoring process effectively restores the deformed joint to obtain better mechanical behavior.
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Lin, Hang, Penghui Sun, and Yifan Chen. "Shear Strength of Flat Joint considering Influencing Area of Bolts." Advances in Civil Engineering 2020 (November 12, 2020): 1–12. http://dx.doi.org/10.1155/2020/8878432.

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Bolt is popular in the reinforcement of geotechnical engineering, which can significantly improve the strength and stability of jointed rock mass. For bolted joint, the bolting area is a certain scope instead of the entire joint surface; therefore, it is necessary to study the effect of bolt influencing area on the shear strength of rock joints. In this paper, a series of laboratory direct shear tests were executed on the bolted joints to explore the influence of bolts on the joint shear strength, as well as the influencing area of bolt. Via successively changing bolting angle and bolt number, the shear stress-shear displacement curves of bolted joints were recorded and the variation law of shear strength was analyzed. Based on the assumption of the circular influencing area of bolt, the influence coefficient m (defined as the diameter ratio of the influencing area to the bolt) was introduced to establish the theoretical calculation model of the shear strength of bolted joint, which was verified by test results. Furthermore, the value of m was changed, and the shear strengths of bolted joints under different bolting condition were calculated to compare with the test results. The average relative error Eave was selected to determine the optimal value of m under the corresponding bolting condition, and it tends to sufficiently small values under the case of m > 30 for one-bolted joint and m > 25 for two-bolted joint, as well as m > 20 for three-bolted joint, which demonstrates that m can be applied to effectively calculate the actual influencing area of bolt.
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Kim, Young-Jin, Won-Jong Chin, and Se-Jin Jeon. "Interface Shear Strength at Various Joint Types in High-Strength Precast Concrete Structures." Materials 13, no. 19 (2020): 4364. http://dx.doi.org/10.3390/ma13194364.

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More precast concrete structures have recently been constructed due to their many advantages when compared to conventional cast-in-place construction. Structural behavior at the joints between the precast segments can significantly affect the overall integrity, safety, and serviceability of the structure. In this study, therefore, the interface shear strength of high-strength precast members was investigated by performing push-off tests with the following variables: compressive strength of precast members, dry or wet joint, number and height of shear keys, joint width, filler type, curing temperature, and lateral compressive stress. The test results were analyzed to reveal the effect of each test variable on the joint shear strengths of the specimens. For instance, the failure loads were increased by 14–140%, depending on the lateral compressive stress, as the specified compressive strength of the precast members was increased from 80 to 150 MPa in the dry joints. The failure loads of the wet joints strongly depended on the strength of the filler rather than on that of the precast members and, as a result, the specimen with ultra-high-strength concrete filler was 46–48% stronger than those with high-strength mortar filler. The shear strengths of various joint types obtained from the test were further analyzed in comparison with the predictive equations of Japan Society of Civil Engineers (JSCE) and American Association of State Highway and Transportation Officials (AASHTO) with the aim of validating the appropriateness of these design provisions. In particular, an improved value of a coefficient in the JSCE equation is proposed to cover a range of compressive strengths in various precast members and filling materials.
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MACHIDA, T., T. OKAI, K. TAKAHASHI, and T. HIRAOKA. "Shear strength of shave-joint." Journal of the Japan Society for Composite Materials 15, no. 4 (1989): 158–65. http://dx.doi.org/10.6089/jscm.15.158.

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Lei, Daxing, Hang Lin, Yifan Chen, Rihong Cao, and Zhijie Wen. "Effect of Cyclic Freezing-Thawing on the Shear Mechanical Characteristics of Nonpersistent Joints." Advances in Materials Science and Engineering 2019 (November 6, 2019): 1–14. http://dx.doi.org/10.1155/2019/9867681.

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The effects of freezing-thawing cycles and persistency differences have a significant impact on the shear mechanical properties of joints. In this paper, a series of joints direct shear tests were performed on freezing-thawing treated joints to investigate the effect of freezing-thawing cycles and the persistency on the shear strength deterioration of joints. Shear strength and residual strength decrease with the freezing-thawing cycle increase and joint persistency increase. Shear strength damage mainly generates in the initial stage of the freezing-thawing cycle, and the shear strength decreases slightly in the late freezing-thawing cycle stage. The freeze-thaw cycle has a minimal effect on the shear strength of joints with low persistency, yet has a great effect on joints with high persistency. The damage of joint roughness caused by freezing-thawing cycles increases with joint persistency increases. When the joint persistency is constant, the shear strength parameter decreases with the freezing-thawing cycle at first and then tends to be stable. Cohesion is the dominant factor that controls shear strength. When freezing-thawing cycles are constant, the friction angle decreases slowly with persistency at first and then decreases rapidly, and the friction angle is the dominant factor that controls shear strength.
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Yin, Dawei, Shaojie Chen, Xingquan Liu, and Hongfa Ma. "Simulation Study on Strength and Failure Characteristics for Granite with a Set of Cross-Joints of Different Lengths." Advances in Civil Engineering 2018 (2018): 1–10. http://dx.doi.org/10.1155/2018/2384579.

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The strength and failure characteristics for granite specimen with a set of cross-joints of different lengths were studied using PFC2D software. The results show that when the included angle of α between the main joint and loading direction is 30° or 45°, no matter what the included angle of β between main and secondary joints is, the main joint controls crack propagation and failure of granite specimen, which occurs the shear failure propagating from main joint tips, and the corresponding uniaxial compressive strength is low. Meanwhile, the secondary joint is the key joint for crack propagation and failure at α of 0° and 90° except when β is 90°. The granite specimen occurs the shear failure propagating from secondary joint tips. And, the shear failure crossing upper tips of main and secondary joints is found at α of 0° or 90° and β of 90°. Their uniaxial compressive strengths are large. Also, the combined actions of main and secondary joints determine crack propagation and failure at α of 60° except when β is 90°. The granite specimen occurs the hybrid failure, including shear failure propagating from main joint tips and tensile failure propagating from main and secondary joints center or secondary joint tips. And, when α is 60° and β is 90°, the granite specimen occurs the shear failure along secondary joint plane direction, and its uniaxial compressive strength is small. Generally, when α or β is a fixed value, the uniaxial compressive strength firstly decreases and then increases with the increase of β or α. Additionally, when α is 60° and β>45°, the uniaxial compressive strength represents a decreasing trend. The uniaxial compressive strength at α and β between 30° and 60° is generally small. Finally, the microdisplacement field distributions of granite specimen were discussed.
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Lin, Hang, Hu Wang, Yifan Chen, et al. "Shear Resistance of Rock Joint under Nonuniform Normal Stress." Advances in Materials Science and Engineering 2020 (March 23, 2020): 1–8. http://dx.doi.org/10.1155/2020/9316482.

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Many factors influence the shear resistance of rock joints. Among them, the above overburden load is the most important factor. The uneven thickness of the overburden causes the joints to be subjected to the nonuniform distribution load. While the peak shear strength shows nonlinear relationship with normal stress, linear superposition cannot be used to calculate the overall shear resistance of joint under nonuniform normal stress distribution. In this paper, the nonlinear shear strength model, JRC-JCS model, is applied to study the overall shear resistance of the joint under four nonuniform distribution patterns of normal stress. The results show that when the normal stress is distributed in a nonuniform way, the shear resistance provided by rock joint as a whole decreases with the increase of the normal stress distribution interval. Given the nonuniform distribution of normal stress along the joint, the shear resistance obtained by the Mohr-Coulomb linear model is overestimated. In order to give full play to the overall shear performance of the joint, the shear strength at different positions on the joint should be as close as possible. Then, the shear strength of joint parts can enter peak state condition simultaneously, at which time the shear strength is fully exerted.
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Wang, Dehong, Yanzhong Ju, and Hao Shen. "Crack Resistance Properties of HPFRC Beam-Column Joints under Cyclic Load." Advances in Materials Science and Engineering 2019 (March 4, 2019): 1–11. http://dx.doi.org/10.1155/2019/8361095.

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To investigate the crack resistance properties of high-performance fiber-reinforced concrete (HPFRC) beam-column joints, quasi-static tests of twenty-four beam-column joint specimens were performed. Test specimen variables included joint types, size effect, axial compression ratio, stirrup ratio in joint, web reinforcement, and noncorner vertical reinforcement across the joint region. The influences of these factors on the crack properties of HPFRC joints were analyzed. Test results showed that the shear strength at the crack of HPFRC exterior joints with shear failure was closer to the ultimate bearing capacity. The average ratio of the cracking shear force to the peak shear force was 0.631 for the exterior joint with shear failure, and the ratio was 0.527 for the interior joint with the same size. The size effect was observed in HPFRC joint specimens, and the average shear stress at the joint crack decreased with the increase of the joint specimen size. The increase of the axial compression ratio can improve the crack resistance properties (cracking strength and crack width) of HPFRC joints. Web reinforcement and noncorner vertical reinforcement across the joint region have no evident influence on the cracking strength of joints, but they significantly affect the distribution and width of cracks in the joint region. The formulas for calculating the cracking strength and crack width of HPFRC joints were proposed based on the test results.
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Mazlee, Mohd Noor, Alvin Tan Yin Zhen, Shamsul Baharin Jamaludin, Nur Farhana Hayazi, and Shaiful Rizam Shamsudin. "Joining of Dissimilar 6063 Aluminium Alloy – 316L Stainless Steel by Spot Welding: Tensile Shear Strength and Heat Treatment." Advanced Materials Research 795 (September 2013): 492–95. http://dx.doi.org/10.4028/www.scientific.net/amr.795.492.

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Tensile shear strength and ageing treatment of dissimilar 6063 aluminum alloy-316L stainless steel joint fabricated by spot welding were investigated. The results showed that tensile shear strength increased with the increasing of welding current. The enhancement of tensile shear strength of the joints was due to the enlargement of the nugget diameter. It was also found that the tensile shear strength values for heat treated joint almost similar to that of non-heat treated joint.
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Jiang, Haibo, Mingzhu Chen, Zhijun Sha, Jie Xiao, and Jiahui Feng. "Numeric Analysis on Shear Behavior of High-Strength Concrete Single-Keyed Dry Joints with Fixing Imperfections in Precast Concrete Segmental Bridges." Materials 13, no. 13 (2020): 2914. http://dx.doi.org/10.3390/ma13132914.

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Fixing imperfections in keyed dry joints between the concrete segments compromise the performance of precast concrete segmental bridges (PCSBs), which needs to consider carefully. In this study, a finite-element model on high-strength concrete single-keyed dry joints in PCSBs was established and validated by experimental results. Parametric studies on fixing imperfections in key, concrete strengths, and confining pressures were carried out based on that model. The numeric results included crack patterns, load–displacements and shear strength. Fixing imperfections—especially at lower surface of keys—reduced shear strength of single-keyed dry joints by the different shear transfer mechanism. Higher confining pressure and concrete strength improved the shear strength, but they mitigated and aggravated the effect of fixing imperfections at lower surface of key on shear strength, respectively. Compared with simulating results, AASHTO standard overestimated the shear capacity of single-keyed dry joints with fixing imperfections at lower surface of key by up to 0.602–22.0%, but greatly underestimated that of the rest. A modified formula with a strength reduction factor was proposed. For six experimental three-keyed dry-joint specimens and 30 numeric single-keyed dry-joint specimens with or without fixing imperfections, the average ratio of code predictions to experimental results was 90.4% and 81.6%, respectively.
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Dissertations / Theses on the topic "Joint shear strength"

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Shou, Guohua. "Joint roughness characterization and effect of roughness on peak shear strength of joints." Diss., The University of Arizona, 1994. http://hdl.handle.net/10150/186804.

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Rock joint surface roughness is characterized by using statistical parameters and fractal parameters estimated by various methods. It was found that at least two parameters are required to quantify joint surface roughness. By limiting only to statistical parameters, an average I angle is suggested to capture the large-scale undulations (non-stationary part of roughness) and Z₂' is suggested to capture the small-scale roughness (stationary part of roughness). Fractal parameters estimated by different method were used to describe the stationary part of surface roughness. Relation between fractal dimension estimated by the divider method and roughness was investigated by introducing a new term called specific length. With the help of the specific length it was proved that even though fractal dimension is a useful parameter, it alone is not sufficient to describe roughness. Two fractal roughness parameters, K(d) and D are suggested to quantify the stationary roughness. Available box methods were found not suitable for quantification of roughness of non-self-similar profiles. Using the initial portion of the variogram function a relation between the fractal dimension and a variogram parameter is presented. It is clear that at least two variogram/fractal related parameters are needed to describe at least two variogram/fractal related parameters are needed to describe stationary roughness. The fractal dimension D and Kᵥ are suggested to quantify stationary roughness. The power spectral density function is used to obtain spectral parameters to quantify stationary roughness. The relation between the fractal dimension and a spectral parameter is given. It is shown that the fractal dimension alone is insufficient to characterize stationary roughness of non-self-similar profiles. The fractal dimension and the spectral intercept K(s) are suggested to quantify stationary roughness. Four new equations are suggested to predict peak shear strength of joints incorporating one or two aforementioned parameters to capture stationary roughness and I angle to capture non-stationary roughness. Roughness parameters should be calculated in different directions to capture the anisotropic roughness that exist in most of rock joint surfaces. The validation exercise performed showed clearly that the new equations have a good capability of predicting anisotropic peak shear strength of joints.
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Lazzari, Elisa. "Analysis of shear strength of rock joints with PFC2D." Thesis, KTH, Jord- och bergmekanik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-129740.

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Joints are the main features encountered in rock and sliding of rock blocks on joints is classified as the principal source of instability in underground excavations. In this regard, joints’ peak shear strength is the controlling parameter. However, given the difficulty in estimating it, shear tests are often performed. These are often quite expensive and also time consuming and, therefore, it would be valuable if shear tests could be artificially performed using numerical models. The objective of this study is to prove the possibility to perform virtual numerical shear tests in a PCF2D environment that resemble the laboratory ones. A numerical model of a granite rock joint has been created by means of a calibration process. Both the intact rock microparameters and the smooth joint scale have been calibrated against macroparameters derived from shear tests performed in laboratory. A new parameter, the length ratio, is introduced which takes into account the effective length of the smooth joint compared to the theoretical one. The normal and shear stiffnesses, the cohesion and the tensile force ought to be scaled against the length ratio. Four simple regular joint profiles have been tested in the PFC2D environment. The analysis shows good results both from a qualitative and from a quantitative point of view. The difference in peak shear strength with respect to the one computed with Patton´s formula is in the order of 1% which indicates a good accuracy of the model. In addition, four profiles of one real rough mated joint have been tested. From the scanned surface data, a two-dimensional profile has been extracted with four different resolutions. In this case, however, interlocking of particles along the smooth joint occurs, giving rise to an unrealistic distribution of normal and shear forces. A possible explanation to the problem is discussed based on recent developments in the study of numerical shear tests with PFC2D.
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Tiu, W. P. "Fatigue strength prediction of adhesively bonded unidirectional carbon fibre reinforced composite joints." Thesis, City University London, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378857.

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Um, Jeong-gi. "Accurate quantification of rock joint roughness and development of a new peak shear strength criterion for joints." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/282509.

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Accurate quantification of roughness is important in modeling strength, deformability and fluid flow behaviors of joints. Both stationary and non-stationary fractional Brownian profiles with known values of the fractal dimension and other profile properties were generated. The generated profiles were in general quite similar to the roughness profiles of natural rock joints. For different values of the input parameter of the line scaling, variogram and roughness-length methods, D was calculated for the generated self-affine profiles to investigate the accuracy of each method. The results obtained are used to suggest guidelines to calculate fractal-based roughness parameters accurately for natural rock joint profiles. It is important to know the strength of rock discontinuities in different directions in dealing with rock engineering systems which are subjected to various external forces. The roughness of a natural rock joint was measured in different directions using a laser profilometer. A model material which is a mixture of plaster of Paris, sand and water was used to make model material replicas of the natural rock joint. Direct shear tests were performed on rough model material joints at five different normal stresses, in the same directions which were used for the roughness measurements. The scratched areas on rough joints resulting from direct shear tests were used along with the joint surface topography to estimate the asperity shear area of the joints. Direct shear tests were conducted on smooth model material joints to estimate the basic friction angle. Required tests were conducted on intact model material to develop a peak shear strength criterion for the intact model material. The direct shear data obtained on the rough joint for 3 of the 5 normal stresses were used along with other laboratory test results to develop a new peak shear strength criterion which includes two fractal based stationary roughness parameters, a non-stationary roughness parameter, basic friction angle, normal stress, joint compressive strength, intact shear strength and area of asperity shear as a proportion. The developed criterion was used to predict the peak shear strength in different directions at the other two normal stresses which were not used in developing the peak shear strength model. The comparison between the predictions and the measured values showed that the new peak shear strength criterion has the capability to predict anisotropic peak shear strength accurately. In practice, to allow for modeling uncertainties, the new criterion should be used with a factor of safety of about 1.5.
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Ríos, Bayona Francisco. "Analytical and numerical approaches to estimate peak shear strength of rock joints." Licentiate thesis, KTH, Jord- och bergmekanik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-248019.

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In Sweden, there exists a large number of dams. Many of them are founded on rock masses normally affected by the presence of sub-horizontal rock fractures, which makes sliding along rock joints under the dam foundation one of the most critical failure mechanism. Various attempts have been made to relate the peak shear strength of rock joints to measurable parameters. However, the uncertainty in the determination of the shear strength of rock joints is nonetheless still significant.The main aim of this thesis is to investigate, develop and apply analytical and numerical techniques for estimation of peak shear strength of natural and unfilled rock joints. In a first step, the peak shear strength of several natural and unfilled rock joint was calculated by using surface aperture measurements from high-resolution optical scanning and a modified version of the analytical criterion previously developed by Johansson and Stille in 2014. In a second step, PFC2D was utilised to perform numerical shear tests on two-dimensional profiles selected from high-resolution optical scanning on unweathered and perfectly mated tensile induced rock joints.The results from the analytical approach show that the calculated peak shear strengths of the analysed samples are in good agreement compared with the laboratory investigations. Conversely, the obtained results from the numerical approach show lower peak shear strengths in the analysed two-dimensional profiles compared with the conducted laboratory shear tests.The analytical approach together with the advanced techniques to measure surface roughness available today, may be a possible way forward towards a methodology to determine peak shear strength of large-scale natural rock joints in-situ.
Bergsprickors skjuvhållfasthet är en avgörande faktor för att kunna bestämma säkerheten mot gliding för dammar där sub-horisontella utbredda bergsprickor existerar. Samtidigt är parametern svår att bestämma då den påverkas av flera faktorer som sprickytans råhet, vittringsgrad, normalspänning, skala samt passning. Skjuvhållfasthet av bergsprickor kan bestämmas genom att använda empiriska och analytiska brottkriterier samt numeriska metoder. Problemet med de befintliga metodikerna är att de inte beaktar inverkan från sprickans passning. Detta innebär att hållfastheten riskerar att överskattas.Det övergripande syftet med denna licentiatuppsats är att studera, utveckla och tillämpa analytiska och numeriska metoder för uppskattning av skjuvhållfasthet för naturliga och ofyllda bergsprickor. I ett första steg beräknades skjuvhållfastheten för ett antal naturliga och ofyllda bergsprickor. Detta gjordes genom att mäta aperturen baserat på högupplöst skanning och en vidareutvecklad version av det analytiska kriteriet som föreslogs av Johansson och Stille 2014. I ett andra steg användes PFC2D för att genomföra numeriska skjuvtester på två-dimensionella sprickprofiler baserat på högupplöst skanning av perfekt passade och draginducerade bergsprickor.Resultaten från uppskattad skjuvhållfasthet med den analytiska metodiken visar på en bra överensstämmelse i jämförelse med de utförda skjuvförsöken. Resultaten från de utförda analyserna med PFC2D visar på en något lägre skjuvhållfasthet än vad som observeras i verkligheten.Den utvecklade analytiska metodiken, tillsammans med de avancerade tekniker som idag finns för att mäta sprickytornas råhet, bedöms kunna utgöra ett första steg mot att bättre kunna bestämma den storskaliga skjuvhållfastheten för bergsprickor i fält.

QC 20190402

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Staniscia, Martina. "On-site testing of joint shear strength in masonry constructions: an experimental study in a traditional adobe building in Portugal." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

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In the last decades, earthen constructions have long been debated in the civil engineering and architecture community. Two are the focal points at the center of this debate: on one hand, the rediscovery of earth as an eco-friendly and easily available material, which can be used for the design of new constructions; on the other hand, the recovery, restoration and structural reinforcement of the existing buildings, particularly sensitive to degradation phenomena and vulnerable to seismic actions. Portugal has a significant heritage of earthen constructions. Currently, many vernacular buildings, especially in the district of Aveiro, are still in use and some of them have historical and artistic value. However, many of them are in poor state of conservation and many of the incurred problems are due to the lack of in depth knowledge of the materials and construction systems traditionally used. In this contest, the present study aims to increase the knowledge of adobe constructions in Portugal concerning the characterization of the material and its mechanical properties, such as the uniaxial compressive stress in some adobe samples and the shear strength of masonry joints, to have valid instruments for the recovery and conservation. These data are achieved through the development of some diagnostic testing carried out on site on a vernacular building in Aveiro region, which were integrated with laboratory tests in order to reach a better reliability of the obtained results. This research aims to prove the importance of tiling several diagnostic tests to optimize the knowledge of properties and mechanical characteristics of the tested material. This study also has the objective to draw up some guidelines and recommendations for future researches and to provide a valid contribution for all the future interventions of restoration, conservation and rehabilitation of earthen constructions, because earth is a not standardized material and still little investigated.
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Drab, Tomáš. "Mechanické testování pájených spojů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219777.

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The project contains theoretical research of electrotechnical manufacture for lead-free reflow soldering. It contains characterization of soldering processes. Includes variations of solder paste printing, principles of part placing and also reflow soldering process. The project appoints possibilities of testing solder joints strength, mainly focused on mechanical vibrations. It describes a design and preparation of solder joint strength test methods by mechanical vibrations. It compares influence of vibrations on part types and solder alloys.
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Li, Jr-Hung. "Joint Zone Evolution in Infrared Brazed Ti-6Al-4V with Copper Thin Film." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1109186764.

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Crawford, Matthew M. "HYDROLOGIC MONITORING AND 2-D ELECTRICAL RESISTIVITY IMAGING FOR JOINT GEOPHYSICAL AND GEOTECHNICAL CHARACTERIZATION OF SHALLOW COLLUVIAL LANDSLIDES." UKnowledge, 2018. https://uknowledge.uky.edu/ees_etds/61.

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Landslide characterization and hazard assessments require multidisciplinary approaches that connect geologic processes with geotechnical parameters. Field monitoring of hydrologic variables such as water content and water potential, coupled with geoelectrical measurements that can establish relationships used for geotechnical and landslide hazard investigations is deficient. This study brings together different techniques to develop a methodology that connects geoelectrical measurements and shear strength. A field-based framework was established that includes (1) analysis of long-term soil moisture fluctuations within different landslides (2) establishment of constitutive and new equations that test the use of electrical conductivity to predict soil-water relationships and shear strength (3) using electrical resistivity tomography (ERT) to support and facilitate the prediction of shear strength in a slope. Hydrologic conditions including volumetric water content, water potential, and electrical conductivity in the soil were measured at three active landslides in Kentucky. The in-situ electrical conductivity used within the framework is valid as a predictor of suction stress and shear strength. The ERT supports interpretations of landslide failure zones, landslide type, lithologic boundaries, and changes in moisture conditions, but also is able to utilize the methodology to calculate shear strength, and provide a spatial view of shear strength in the slope. The practical application of this framework is to support landslide hazard assessment and further understand the long-term influence of moisture conditions in hillslope soils. These parameters are pertinent to investigating the stability of landslides that are often triggered or reactivated by rainfall.
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Dobiáš, Jiří. "Studium adheze lepených balistických kompozitů v závislosti na použitých materiálech." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2018. http://www.nusl.cz/ntk/nusl-376803.

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The aim of this work was to investigate the properties of bonded ballistic materialsBalistic composites are mainly glued to reduce weight while keeping their protective properties. On this basis, the materials used were ballistic steel, ceramics, rubber kevlar, non-gummed kevlar, Dyneema and fiberglass. For bonding used were a one-component adhesive Collano 36.104 and two-component adhesive Biresin U1305. The strength of the joint was measured in shear at tensile loads. From these results, deformation energy was further calculated.
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Books on the topic "Joint shear strength"

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Mital, Subodh K. Fiber pushout test: A three-dimensional finite element computational simulation. NASA, 1990.

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A, Biaglow James, and United States. National Aeronautics and Space Administration., eds. Rhenium mechanical properties and joining technology. National Aeronautics and Space Administration, 1996.

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Book chapters on the topic "Joint shear strength"

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Doi, Masanobu, and Satoru Ohtsuka. "Some considerations of Patton model on rock joint shear strength." In Slope Stability Engineering. Routledge, 2021. http://dx.doi.org/10.1201/9780203739600-25.

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Lee, C. H., Y. J. Kim, W. J. Chin, and E. S. Choi. "Shear Strength of Ultra High Performance Fiber Reinforced Concrete (UHPFRC) Precast Bridge Joint." In High Performance Fiber Reinforced Cement Composites 6. Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-2436-5_50.

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Vishnu Pradeesh, L., Saptarshi Sasmal, Kanchana Devi, and K. Ramanjaneyulu. "Evaluation of Models for Joint Shear Strength of Beam–Column Subassemblages for Seismic Resistance." In Advances in Structural Engineering. Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-2193-7_69.

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Muzakkar, M. Z., S. Ahmad, M. A. Yarmo, A. Jalar, and M. Bijarimi. "Shear Strength of Single Lap Joint Aluminium-Thermoplastic Natural Rubber (Al-TPNR) Laminated Composite." In Recent Trends in Physics of Material Science and Technology. Springer Singapore, 2014. http://dx.doi.org/10.1007/978-981-287-128-2_10.

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Hamdan, Safarina Haslimawaty, Anwar Zainal Abidin, and Zakiah Ahmad. "Tensile and Interlaminar Shear Strength of Unidirectional Kenaf Fibre Reinforced Polymer with Overlapping Joint." In InCIEC 2013. Springer Singapore, 2014. http://dx.doi.org/10.1007/978-981-4585-02-6_59.

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Takiguchi, Michihiro, and Fusahito Yoshida. "Effects of Loading Speed and Shear Prestrain on Adhesive Fatigue Strength in Single-Lap Joint." In Engineering Plasticity and Its Applications. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-433-2.1479.

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Serizawa, Hisashi, Kazuaki Katayama, Charles A. Lewinsohn, Mrityunjay Singh, and Hidekazu Murakawa. "Numerical Analysis of Mechanical Test Methods for Evaluating Shear Strength of Joint by Using Interface Element." In The Mechanical Behavior of Materials X. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-440-5.1489.

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Xu, Jiu Hua, Wen Feng Ding, and F. Qian. "Shear Strength of Brazed Joint between Diamond Grains and Steel Matrix Using a Ni-Cr Filler Alloy." In Advances in Abrasive Technology IX. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-416-2.501.

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Shohji, Ikuo, Hiroki Goto, Kiyotomo Nakamura, and Toshikazu Ookubo. "Influence of Surface Finish of Cu Electrode on Shear Strength and Microstructure of Solder Joint with Sn-3Ag-0.5Cu." In Key Engineering Materials. Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-978-4.2864.

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Ajimituhuo, J. L., and O. S. Abejide. "Probabilistic Shear Strength of Bolted Joints in Offshore." In Advances and Challenges in Structural Engineering. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-01932-7_28.

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Conference papers on the topic "Joint shear strength"

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Zeng, L., and L. Haylock. "Effects of Fastener Coating and Shear Strength on Joint Lap Shear Strength." In Aerospace Manufacturing and Automated Fastening Conference & Exhibition. SAE International, 2008. http://dx.doi.org/10.4271/2008-01-2311.

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Ibekwe, Samuel, Patrick F. Mensah, Amitava Jana, Guoqiang Li, and Michael A. Stubblefield. "Shear Strength Characteristics of an Ultrasonic Welded Lap Shear Joint." In ASME 2002 Engineering Technology Conference on Energy. ASMEDC, 2002. http://dx.doi.org/10.1115/etce2002/ot-29149.

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Experimental attempts were carried out on ultrasonically joining glass fiber composite materials using fiber reinforced adhesive. Two sets of specimens with different energy guides were investigated. All the samples failed by shear at the interface of the lap joint. Finite element analysis was conducted to justify the test results and the effect of adherend surface treatment.
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Qian, Yu, Debakanta Mishra, Erol Tutumluer, Youssef M. A. Hashash, and Jamshid Ghaboussi. "Moisture Effects on Degraded Ballast Shear Strength Behavior." In 2016 Joint Rail Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/jrc2016-5840.

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Ballast consisting of large sized aggregate particles with uniform size distribution is an essential component of the track substructure, to facilitate load distribution and drainage. As freight tonnage accumulates with traffic, ballast will accumulate an increasing percentage of fines due to either aggregate breakdown or outside contamination such as subgrade soil intrusion and coal dust collection. According to the classical text by Selig and Waters [1], ballast degradation from traffic involves up to 76% of all fouling cases; voids will be occupied by fines from the bottom of ballast layer gradually causing ballast clogging and losing its drainage ability. When moisture is trapped within ballast, especially fouled ballast, ballast layer stability is compromised. In the recent studies at the University of Illinois, the focus has been to evaluate behavior of fouled ballast due to aggregate degradation using large scale triaxial testing. To investigate the effects of moisture on degraded ballast, fouled ballast was generated in the laboratory through controlled Los Angeles (LA) abrasion tests intended to mimic aggregate abrasion and breakdown and generate fouled ballast at compositions similar to those observed in the field due to repeated train loadings. Triaxial shear strength tests were performed on the fouled ballast at different moisture contents. Important findings of this preliminary study on characterizing wet fouled ballast are presented in this paper. Moisture was found to have a significant effect on the fouled ballast strength behavior. Adding a small amount of 3% moisture (by weight of particles smaller than 3/8 in. size or smaller than 9.5 mm) caused test specimens to indicate approximately 50% decrease in shear strength of the dry fouled ballast. Wet fouled ballast samples peaked at significantly lower maximum deviator stress values at relatively smaller axial strains and remained at these low levels as the axial strain was increased.
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Masuko, Masabumi, Hiroya Miyamoto, and Akihito Suzuki. "Shear Strength and Durability of Self Assembled Monolayer." In ASME/STLE 2007 International Joint Tribology Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ijtc2007-44221.

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A well-defined self-assembled monolayer (SAM) of octadecyltrichlorosilane (OTS) on a very smooth Si wafer or glass disk was prepared and the tribological performance was studied using a glass ball and a steel ball as a counter specimen. Shear strength and durability of OTS-SAM were discussed considering a difference of the surface roughness of specimen couples.
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Stark, Timothy D., Robert H. Swan, and Zehong Yuan. "Ballast Direct Shear Testing." In 2014 Joint Rail Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/jrc2014-3714.

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This paper summarizes the appropriate equipment and test procedure for ballast shear strength testing using the direct shear method (ASTM D3080 and D5321) and presents some typical results. To accomplish this ballast testing, a full-scale direct shear box was developed that can accommodate an approximately 1 m (3 feet) wide and 0.6 m (2 feet) deep specimen, which is much larger than current shear boxes used for ballast testing. This larger specimen size resulted in significant differences in measured shear behavior and shear strength parameters. The shear strength properties of the ballast under typical as-placed conditions are determined herein using the new shear box and normal stresses applied through dead weight loading that are representative of railroad track conditions. Effects of direct shear specimen size and confining normal stress are demonstrated using a typical angular granite ballast and the results are compared to published ballast shear strength data.
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Zheming Zhang, Jingshen Wu, Adam R. Zbrzezny, and Neil Mclellan. "Effect of shear rate on lead free solder joint strength." In 2008 International Conference on Electronic Packaging Technology & High Density Packaging (ICEPT-HDP). IEEE, 2008. http://dx.doi.org/10.1109/icept.2008.4607142.

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Yokell, Stanley. "Assuring Tube-to-Tubesheet Joint Tightness and Strength." In ASME 2011 Power Conference collocated with JSME ICOPE 2011. ASMEDC, 2011. http://dx.doi.org/10.1115/power2011-55017.

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This paper describes preparing mockup tubesheet specimens for visual examination using a digital microscope to determine that tube joint welds are of the specified size and that expanded joints are satisfactory for the intended purpose. It discusses nondestructive examinations (NDE) of tubesheets and tube joints intended to assure achieving sufficient tightness and strength to satisfy the uses to which the exchangers will be put. The paper refers to the ASME Boiler and Pressure Vessel Code (Code) paragraphs that apply to tube joint welds and expanded joints including shear load testing when the Code requires it.[1] The discussion also addresses the need for manufacturers to have qualified tube joining procedures and personnel who use the procedures. The work concludes with a summary of ways to assure tube joint tightness and strength.
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Burak, Burcu. "Development of a Parametric Equation to Predict the Joint Shear Strength." In Structures Congress 2013. American Society of Civil Engineers, 2013. http://dx.doi.org/10.1061/9780784412848.141.

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Mishra, Debakanta, and S. M. Naziur Mahmud. "Effect of Particle Size and Shape Characteristics on Ballast Shear Strength: A Numerical Study Using the Direct Shear Test." In 2017 Joint Rail Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/jrc2017-2322.

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The ballast layer serves as a major structural component in typical ballasted railroad track systems. When subjected to an external load, ballast particles present a complex mechanical response which is strongly dependent on particle to particle interactions within this discrete medium. One common test used to study the shear strength characteristics of railroad ballast is the Direct Shear Test (DST). However, it is often not feasible in standard geotechnical engineering laboratories to conduct direct shear tests on ballast particles due to significantly large specimen and test setup requirements. Even for the limited number of laboratories equipped to accommodate the testing of such large specimens, conducting repeated tests for parametric analysis of different test and specimen parameters on shear strength properties is often not feasible. Numerical modeling efforts are therefore commonly used for such parametric analyses. An ongoing research study at Boise State University is using the Discrete Element Method (DEM) to evaluate the effects of varying particle size and shape characteristics (i.e., flakiness, elongation, roundness, angularity) on direct shear strength behavior of railroad ballast. A commercially available three-dimensional DEM package (PFC3D®) is being used for this purpose. In numerical modeling, railroad ballasts can be simulated using spheres (simple approach) and non-breakable clumps (complex approach). This paper utilizes both approaches to compare the ballast stress-strain response as obtained from DST. Laboratory test results available in published literature are being used to calibrate the developed numerical models. This paper presents findings from this numerical modeling effort, and draws inferences concerning the implications of these findings on the design and construction of railroad ballast layers.
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Ibekwe, Samuel, Patrick F. Mensah, Ghanashyam Joshi, Guoqiang Li, and Michael Stubblefield. "Experimental and Analytical Strength Characterization of an Ultrasonic Welded Lap Shear Joint." In ASME 2001 Engineering Technology Conference on Energy. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/etce2001-17004.

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Abstract An experimental study on ultrasonic welding of thermoplastic, which is a prelude to study how the technology can be adapted to join composite materials, was conducted. Three sets of specimen were studied to investigate the influence of energy guide on the bonded specimen. No major statistical difference between the ‘energy guides’ of the tested thermoplastic Celuka™ coupons were noted. Failure of the welded specimen was by shear at the interface. A 75% drop in strength for the bonded material was observed.
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Reports on the topic "Joint shear strength"

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Doi, Shigeru, and Takao Mori. Tensile Shear Strength of Aluminum-Steel Rivet Joint. SAE International, 2005. http://dx.doi.org/10.4271/2005-08-0540.

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Baker, B. R. Shear Strength Measurements on Adhesive-Bonded High Explosive Joints (Progress Summary). Office of Scientific and Technical Information (OSTI), 2019. http://dx.doi.org/10.2172/1524743.

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Baker, B. R. Fabrication and Mechanical Testing of Block Shear Joints to Measure Ultimate Shear Strength in Adhesive-Bonded High Explosive (HE) Joints (Progress Summary). Office of Scientific and Technical Information (OSTI), 2019. http://dx.doi.org/10.2172/1524741.

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Gent, A. N., and C. W. Lin. Comparison of Peel and Lap Shear Bond Strengths for Elastic Joints with and without Residual Stresses. Defense Technical Information Center, 1989. http://dx.doi.org/10.21236/ada208102.

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