Journal of Pressure Vessel Technology最新文献

{"title":"Theoretical and Experimental Study of Bimetal-Pipe Hydroforming.","authors":"Zeng Dezhi,&nbsp;Deng Kuanhai,&nbsp;Shi Taihe,&nbsp;Lin Yuanhua,&nbsp;Zhu Hongjun,&nbsp;Li Tianlei,&nbsp;Sun Yongxing","doi":"10.1115/1.4026976","DOIUrl":"https://doi.org/10.1115/1.4026976","url":null,"abstract":"<p><p>The corrosion of oil country tubular goods (OCTG) gets more and more serious especially in the acidic environment. So, it is very important to develop a perfect anticorrosion technology for exploring sour oil and gas fields economically and safely. Analysis indicates that the bimetal-pipe (BP) which consists of the base layer of low carbon steel and a corrosion resistant alloy (CRA) cladding layer is an economic and reliable anticorrosion technology and has broad application prospects in the transportation of acid medium. However, theoretical study of hydraulic expansion mechanism for BP is not enough. In this paper, the deformation compatibility condition of BP was obtained by studying the deformation rule of the (CRA) liner and the outer pipe of carbon steel in the forming process; the mechanical model which can compute the hydroforming pressure of BP has been established based on the nonlinear kinematic hardening characteristics of material; furthermore, based on the stress strain curve of inner pipe simultaneously, the calculation method of the plastic hardening stress has been proposed. Thus, the accurate method for computing the forming pressure was obtained. The experimental data show that results are consistent with results of the proposed model. It indicates that the model can be used to provide theoretical guidance for the design and production as well as use of BP.</p>","PeriodicalId":513862,"journal":{"name":"Journal of Pressure Vessel Technology","volume":"136 6","pages":"0614021-6140210"},"PeriodicalIF":1.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1115/1.4026976","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32774746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analytical Investigation of Elastic Thin-Walled Cylinder and Truncated Cone Shell Intersection Under Internal Pressure.","authors":"J Zamani,&nbsp;B Soltani,&nbsp;M Aghaei","doi":"10.1115/1.4027583","DOIUrl":"https://doi.org/10.1115/1.4027583","url":null,"abstract":"<p><p>An elastic solution of cylinder-truncated cone shell intersection under internal pressure is presented. The edge solution theory that has been used in this study takes bending moments and shearing forces into account in the thin-walled shell of revolution element. The general solution of the cone equations is based on power series method. The effect of cone apex angle on the stress distribution in conical and cylindrical parts of structure is investigated. In addition, the effect of the intersection and boundary locations on the circumferential and longitudinal stresses is evaluated and it is shown that how quantitatively they are essential.</p>","PeriodicalId":513862,"journal":{"name":"Journal of Pressure Vessel Technology","volume":"136 5","pages":"0512011-512018"},"PeriodicalIF":1.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1115/1.4027583","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32529390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low Mass-Damping Vortex-Induced Vibrations of a Single Cylinder at Moderate Reynolds Number.","authors":"Y Jus,&nbsp;E Longatte,&nbsp;J-C Chassaing,&nbsp;P Sagaut","doi":"10.1115/1.4027659","DOIUrl":"https://doi.org/10.1115/1.4027659","url":null,"abstract":"<p><p>The feasibility and accuracy of large eddy simulation is investigated for the case of three-dimensional unsteady flows past an elastically mounted cylinder at moderate Reynolds number. Although these flow problems are unconfined, complex wake flow patterns may be observed depending on the elastic properties of the structure. An iterative procedure is used to solve the structural dynamic equation to be coupled with the Navier-Stokes system formulated in a pseudo-Eulerian way. A moving mesh method is involved to deform the computational domain according to the motion of the fluid structure interface. Numerical simulations of vortex-induced vibrations are performed for a freely vibrating cylinder at Reynolds number 3900 in the subcritical regime under two low mass-damping conditions. A detailed physical analysis is provided for a wide range of reduced velocities, and the typical three-branch response of the amplitude behavior usually reported in the experiments is exhibited and reproduced by numerical simulation.</p>","PeriodicalId":513862,"journal":{"name":"Journal of Pressure Vessel Technology","volume":"136 5","pages":"0513051-513057"},"PeriodicalIF":1.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1115/1.4027659","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32715779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Method Using Optical Contactless Displacement Sensors to Measure Vibration Stress of Small-Bore Piping.","authors":"Akira Maekawa,&nbsp;Takashi Tsuji,&nbsp;Tsuneo Takahashi,&nbsp;Michiyasu Noda","doi":"10.1115/1.4025082","DOIUrl":"https://doi.org/10.1115/1.4025082","url":null,"abstract":"<p><p>In nuclear power plants, vibration stress of piping is frequently evaluated to prevent fatigue failure. A simple and fast measurement method is attractive to evaluate many piping systems efficiently. In this study, a method to measure the vibration stress using optical contactless displacement sensors was proposed, the prototype instrument was developed, and the instrument practicality for the method was verified. In the proposed method, light emitting diodes (LEDs) were used as measurement sensors and the vibration stress was estimated by measuring the deformation geometry of the piping caused by oscillation, which was measured as the piping curvature radius. The method provided fast and simple vibration estimates for small-bore piping. Its verification and practicality were confirmed by vibration tests using a test pipe and mock-up piping. The stress measured by both the proposed method and an accurate conventional method using strain gauges were in agreement, and it was concluded that the proposed method could be used for actual plant piping systems.</p>","PeriodicalId":513862,"journal":{"name":"Journal of Pressure Vessel Technology","volume":"136 1","pages":"0112021-1120210"},"PeriodicalIF":1.0,"publicationDate":"2014-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1115/1.4025082","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32394467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sensitivity Analysis of Fitness-for-Service Assessment Based on Reliability for Cylindrical Pressure Vessels With Local Metal Loss.","authors":"Takuyo Kaida,&nbsp;Satoshi Izumi,&nbsp;Shinsuke Sakai","doi":"10.1115/1.4024455","DOIUrl":"https://doi.org/10.1115/1.4024455","url":null,"abstract":"<p><p>Concern about fitness-for-service (FFS) assessments using stochastic analyses for aged pressure equipment with local metal loss has been growing. When a decision must be made regarding whether to run or repair equipment with local metal loss, a structural integrity assessment based on reliability helps. In analyses of failure probability, it is important to identify which variables strongly affect the structural integrity. The stochastic properties of influential parameters must be clarified, but few data have been published regarding the quantitative analysis of the sensitivity of the parameters in FFS assessments of components with local metal loss. Here, we investigated the effects of parameters on the plastic collapse of a damaged cylindrical pressure vessel with local metal loss, in an evaluation of parameter sensitivity. We also analyzed sensitivity indices for the component with several shapes of local metal loss. We found that the corrosion rate has a major influence on the probability of failure. We propose a practical stochastic analysis procedure for components with local metal loss. In this procedure, the parameter that has consistently low sensitivity to the limit state is used as a constant value.</p>","PeriodicalId":513862,"journal":{"name":"Journal of Pressure Vessel Technology","volume":"135 6","pages":"0612021-612028"},"PeriodicalIF":1.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1115/1.4024455","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32394466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Long-Term Stability of Residual Stress Improvement by Water Jet Peening Considering Working Processes.","authors":"Tadafumi Hashimoto,&nbsp;Yusuke Osawa,&nbsp;Shinsuke Itoh,&nbsp;Masahito Mochizuki,&nbsp;Kazutoshi Nishimoto","doi":"10.1115/1.4023417","DOIUrl":"https://doi.org/10.1115/1.4023417","url":null,"abstract":"<p><p>To prevent primary water stress corrosion cracking (PWSCC), water jet peening (WJP) has been used on the welds of Ni-based alloys in pressurized water reactors (PWRs). Before WJP, the welds are machined and buffed in order to conduct a penetrant test (PT) to verify the weld qualities to access, and microstructure evolution takes place in the target area due to the severe plastic deformation. The compressive residual stresses induced by WJP might be unstable under elevated temperatures because of the high dislocation density in the compressive stress layer. Therefore, the stability of the compressive residual stresses caused by WJP was investigated during long-term operation by considering the microstructure evolution due to the working processes. The following conclusions were made: The compressive residual stresses were slightly relaxed in the surface layers of the thermally aged specimens. There were no differences in the magnitude of the relaxation based on temperature or time. The compressive residual stresses induced by WJP were confirmed to remain stable under elevated temperatures. The stress relaxation at the surface followed the Johnson-Mehl equation, which states that stress relaxation can occur due to the recovery of severe plastic strain, since the estimated activation energy agrees very well with the self-diffusion energy for Ni. By utilizing the additivity rule, it was indicated that stress relaxation due to recovery is completed during the startup process. It was proposed that the long-term stability of WJP under elevated temperatures must be assessed based on compressive stresses with respect to the yield stress. Thermal elastic-plastic creep analysis was performed to predict the effect of creep strain. After 100 yr of simulated continuous operation at 80% capacity, there was little change in the WJP compressive stresses under an actual operating temperature of 623 K. Therefore, the long-term stability of WJP during actual operation was analytically predicted.</p>","PeriodicalId":513862,"journal":{"name":"Journal of Pressure Vessel Technology","volume":"135 3","pages":"0316011-316018"},"PeriodicalIF":1.0,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1115/1.4023417","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32394465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Nondestructive Evaluation Method: Measuring the Fixed Strength of Spot-Welded Joint Points by Surface Electrical Resistivity.","authors":"Akira Shimamoto,&nbsp;Keitaro Yamashita,&nbsp;Hirofumi Inoue,&nbsp;Sung-Mo Yang,&nbsp;Masahiro Iwata,&nbsp;Natsuko Ike","doi":"10.1115/1.4007957","DOIUrl":"https://doi.org/10.1115/1.4007957","url":null,"abstract":"<p><p>Destructive tests are generally applied to evaluate the fixed strength of spot-welding nuggets of zinc-plated steel (which is a widely used primary structural material for automobiles). These destructive tests, however, are expensive and time-consuming. This paper proposes a nondestructive method for evaluating the fixed strength of the welded joints using surface electrical resistance. A direct current nugget-tester and probes have been developed by the authors for this purpose. The proposed nondestructive method uses the relative decrease in surface electrical resistance, <i>α</i>. The proposed method also considers the effect of the corona bond. The nugget diameter is estimated by two factors: <i>R</i>_Quota, which is calculated from variation of resistance, and a constant that represents the area of the corona bond. Since the maximum tensile strength is correlated with the nugget diameter, it can be inferred from the estimated nugget diameter. When appropriate measuring conditions for the surface electrical resistance are chosen, the proposed method can effectively evaluate the fixed strength of the spot-welded joints even if the steel sheet is zinc-plated.</p>","PeriodicalId":513862,"journal":{"name":"Journal of Pressure Vessel Technology","volume":"135 2","pages":"0215011-215017"},"PeriodicalIF":1.0,"publicationDate":"2013-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1115/1.4007957","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32391916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Calculating the Optimum Angle of Filament-Wound Pipes in Natural Gas Transmission Pipelines Using Approximation Methods.","authors":"Mohammad Reza Khoshravan Azar,&nbsp;Ali Akbar Emami Satellou,&nbsp;Mohammad Shishesaz,&nbsp;Bahram Salavati","doi":"10.1115/1.4007189","DOIUrl":"https://doi.org/10.1115/1.4007189","url":null,"abstract":"<p><p>Given the increasing use of composite materials in various industries, oil and gas industry also requires that more attention should be paid to these materials. Furthermore, due to variation in choice of materials, the materials needed for the mechanical strength, resistance in critical situations such as fire, costs and other priorities of the analysis carried out on them and the most optimal for achieving certain goals, are introduced. In this study, we will try to introduce appropriate choice for use in the natural gas transmission composite pipelines. Following a 4-layered filament-wound (FW) composite pipe will consider an offer our analyses under internal pressure. The analyses' results will be calculated for different combinations of angles 15 deg, 30 deg, 45 deg, 55 deg, 60 deg, 75 deg, and 80 deg. Finally, we will compare the calculated values and the optimal angle will be gained by using the Approximation methods. It is explained that this layering is as the symmetrical.</p>","PeriodicalId":513862,"journal":{"name":"Journal of Pressure Vessel Technology","volume":"135 2","pages":"0217021-217027"},"PeriodicalIF":1.0,"publicationDate":"2013-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1115/1.4007189","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32394464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}