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Relevant bibliographies by topics / Penetration defect

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Academic literature on the topic 'Penetration defect'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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Journal articles on the topic "Penetration defect"

1

Zhu, Haitao, Di Liu, Han Bao, Zhongjun Ding, and Yi Zhang. "Influence of Initial Imperfections on PMMA Spherical Shell." Advances in Materials Science and Engineering 2022 (October 6, 2022): 1–9. http://dx.doi.org/10.1155/2022/3481368.

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This paper focused on the influence of initial imperfection on the critical load of PMMA pressure spherical shell by introducing buckling modes as the initial defect. Four types of pressure spherical shells including complete spherical shell, spherical shell with single penetration, spherical shell with double penetrations, and hyperspherical shell were studied. The distribution of initial imperfections was given through the modal configuration of linear eigenvalue analysis, and then the buckling critical load of the spherical shell was analyzed by using the consistent modal defect method and

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Luo, Jian, Jiafa Wang, Hongxin Lin, Lei Yuan, Jianjun Gao, and Haibin Geng. "Study on the Relationship between Root Metal Flow Behavior and Root Flaw Formation of a 2024 Aluminum Alloy Joint in Friction Stir Welding by a Multiphysics Field Model." Metals 10, no. 7 (2020): 913. http://dx.doi.org/10.3390/met10070913.

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In friction stir welding (FSW), many defects (such as kissing bond, incomplete penetration, and weak connection) easily occur at the root of the welded joint. Based on the Levy–Mises yield criterion of the Zener–Hollomon thermoplastic constitutive equation, a 3D thermal–mechanical coupled finite element model was established. The material flow behavior and the stress field at the root area of a 6 mm thick 2024-T3 aluminum alloy FSW joint were studied. The influence of pin length on the root flaw was investigated, and the formation mechanism of the “S line” defects and non-penetration defects w

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Light, G. M., J. L. Fisher, R. F. Tennis, J. S. Stolte, and G. J. Hendrix. "Detection and Sizing of Defects in Control Rod Drive Mechanism Penetrations Using Eddy Current and Ultrasonics." Journal of Pressure Vessel Technology 118, no. 3 (1996): 301–7. http://dx.doi.org/10.1115/1.2842192.

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Over the last two years, concern has been generated about the capabilities of performing nondestructive evaluation (NDE) of the closure-head penetrations in nuclear-reactor pressure vessels. These penetrations are primarily for instrumentation and control rod drive mechanisms (CRDMs) and are usually thick-walled Inconel tubes, which are shrink-fttted into the steel closure head. The penetrations are then welded between the outside surface of the penetration and the inside surface of the closure head. Stress corrosion cracks initiating at the inner surface of the penetration have been reported

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Shi, Lei, Xiao Qi, Xinhui Li, et al. "Research on welding defect examination technique based on phased array ultrasonic for high voltage transformer oil tank welds." E3S Web of Conferences 522 (2024): 01041. http://dx.doi.org/10.1051/e3sconf/202452201041.

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Oil tank of high voltage transformer plates. During welding and operation, defects such as incomplete fusion, incomplete penetration , air holes and cracks may be produced which influence the integrity and density of the welds and the whole tank. In order to test the integrity of the shell weld of high-pressure transformer box and ensure no leakage of transformer oil, the phased array testing technology is used to detect the defects of the butt weld of the transformer oil tank. The characteristics of weld defect detection under the condition of incomplete penetration were studied, and the soun

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Ren, Lemei, Wenlong Liu, Bo Zhu, Guansan Tian, Hui Lu, and Linkai Yan. "Quantitative Evaluation of Deformation in High-Speed Magnetic Flux Leakage Signals for Weld Defects in Oil and Gas Pipelines." Processes 12, no. 11 (2024): 2396. http://dx.doi.org/10.3390/pr12112396.

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Complex multiphase flow in oil and gas pipelines raises safety risks. Magnetic flux leakage (MFL) detection effectively identifies pipeline defects. However, the high-speed movement of MFL inspection tools induces motion-induced eddy currents (MIECs), complicating defect recognition and quantification. Most prior research has primarily focused on rectangular defects, leaving a gap in understanding the impact of MIECs on weld defects. This paper proposes the amplitude and shape deformation coefficients to analyze the influence of velocity on various weld defects, including internal reinforcemen

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Rafikov, S. K., A. P. Vatolin, G. S. Sharnina, and K. V. Kozhaeva. "Analysis of Reliability of Welded Connections Liquefied Gas and Condensate Pipelines." IOP Conference Series: Earth and Environmental Science 988, no. 2 (2022): 022053. http://dx.doi.org/10.1088/1755-1315/988/2/022053.

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Abstract To assess the strength and reliability of welded joints, the metal of welded joints of the unstable condensate pipeline was tested for static tension and low-cycle durability. The tests were carried out on defect-free specimens, specimens with defects such as lack of fusion, undercut, single pore, single slag inclusion and specimens with defects combining lack of fusion and undercut. A comparative analysis of the effect of defects combining lack of penetration and undercut and separately located defects such as lack of penetration, undercut, single pore, single slag inclusion on tensi

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Amir, Haider F. Abdul, та Fuei Pien Chee. "Monte Carlo Simulation of Alpha (α) Particles Penetration in Nanoscale Silicon Semiconductor Materials". Advanced Materials Research 528 (червень 2012): 237–40. http://dx.doi.org/10.4028/www.scientific.net/amr.528.237.

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Microsystems, both in space and ground level, will use systems with III-V semiconductors and devices of nanoscale. Vulnerability of this system towards the radiations warrants extra care to be taken. Therefore, appropriate test and analysis to assure the hardness (radiation resistance) of components to be used in various radiation environments is necessary. In this paper, the defect generated in the interaction of alpha (α) particles and silicon (Si) semiconductor material is simulated using SRIM (Stopping and Range of Ions in Matter). The induced defects are in the form of vacancies, defect c

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Min, Jun-Hong, Jee-Soo Jang, and Sang-Ho Lee. "Significance of the double-layer and single-layer signs in the ossification of the posterior longitudinal ligament of the cervical spine." Journal of Neurosurgery: Spine 6, no. 4 (2007): 309–12. http://dx.doi.org/10.3171/spi.2007.6.4.4.

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Object The purpose of this study was to elucidate the significance of the signs of dural penetration, which were previously described by Hida et al. This goal was accomplished by an analysis of preoperative computed tomography scans and a review of the medical records of patients who underwent removal of the ossification of the posterior longitudinal ligament (OPLL) via the anterior approach. Methods Outcomes in 197 patients with cervical OPLL who underwent anterior decompression and fusion were studied retrospectively. The types of OPLL, single- and double-layer signs of dural penetration, di

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Wang, Qing-Yu, Cun Xue, Chao Dong, and You-He Zhou. "Effects of defects and surface roughness on the vortex penetration and vortex dynamics in superconductor–insulator–superconductor multilayer structures exposed to RF magnetic fields: numerical simulations within TDGL theory." Superconductor Science and Technology 35, no. 4 (2022): 045004. http://dx.doi.org/10.1088/1361-6668/ac4ad1.

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Abstract Vortex penetration and vortex dynamics are significantly important to superconducting devices, for example, the superconducting cavities, since vortex motions will create substantial dissipation. In experiments, different kinds of defects as well as different degrees of surface roughness were observed. By considering these in superconductor–insulator–superconductor (SIS) structures, vortex penetration and vortex dynamics are very complex due to their interactions with defects and the influence of surface roughness, especially for radio-frequency (RF) magnetic fields, which are quite d

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Kambayashi, H., Y. Kurokawa, H. Ota, Yasuhiro Hoshiyama, and Hidekazu Miyake. "Evaluation with Surface Analysis Equipment, of Casting Defects in Cast Iron Articles (review)." Materials Science Forum 539-543 (March 2007): 1110–15. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.1110.

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Authors have reported theses concerning the cast defect for publication in journal of Japanese Foundry Engineering Society and AFS Transactions. This is a review of these reports. There are various factors in the casting defect that occurs in the article of casting metal, and specific of the generation factor is difficult. Moreover, it is necessary to decrease the casting defect to reduce the cost of goods manufactured and energy of production. It is effective to the evaluation and the classification method of the casting defect to employ Scanning Electron Microscopy with Energy Dispersion Spe

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Dissertations / Theses on the topic "Penetration defect"

1

McParland, Christopher. "The analysis of defect evolution in a set of reinforced concrete bridges." Thesis, University of Ulster, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270462.

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PANDA, SOURAV. "EVALUATION OF CLINICAL AND RADIOLOGICAL EFFECTIVENESS OF PLASMA RICH IN GROWTH FACTORS (PRGF®) IN MANAGEMENT OF PERIODONTAL INTRAOSSEOUS DEFECTS." Doctoral thesis, Università degli Studi di Milano, 2021. http://hdl.handle.net/2434/818945.

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Background: Plasma Rich in Growth Factors (PRGF) is a mixture of autologous proteins and growth factors, prepared from a certain volume of platelet-rich plasma obtained from a small volume of blood, which does not contain leukocytes. Aim: The aim of the study was to evaluate the clinical and radiological efficacy of Plasma rich in growth factors (PRGF) in adjunct to open flap debridement (OFD) and intra-marrow penetration (IMP) compared to OFD and IMP alone for management of periodontal intra-osseous defects in periodontitis patients. Material and methods: Twenty patients with forty contra-l

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Lundberg, Patrik. "Interface Defeat and Penetration: Two Modes of Interaction between Metallic Projectiles and Ceramic Targets." Doctoral thesis, Uppsala University, Department of Engineering Sciences, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4641.

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<p>Ceramics constitute an important group of low-density armour materials. Their high intrinsic strength makes it possible to design ceramic armour systems capable of defeating projectiles directly on the ceramic surface. This capability, named interface defeat, signifies that the projectile material is forced to flow radially outwards on the surface of the ceramic without penetrating significantly.</p><p>This thesis presents impact experiments between long-rod projectiles and ceramic targets. The projectile/target interaction was studied using flash X-ray technique. Transition velocities (the

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Renström, René. "Impact of Metallic Projectiles on a Ceramic Target Surface : Transition Between Interface Defeat and Penetration." Doctoral thesis, Uppsala universitet, Hållfasthetslära, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7264.

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The purpose of this thesis is to gain understanding of the load on flat target surfaces produced by projectile impact. Models are proposed from which upper and lower bounds can be derived for the transition be-tween interface defeat and normal penetration. It is shown that the dominating contribution to the normal load is generally provided by the hydrodynamic pressure due to the effect of inertia. In addition it is shown that the contributions from yield strength and compressibility are also significant. For a cylindrical tungsten alloy projectile at an impact velocity representative of to-da

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Devaru, Dayakar. "Ground penetrating radar (GPR) based system for nondestructive detection of interior defects in wooden logs." Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4955.

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Thesis (M.S.)--West Virginia University, 2006.<br>Title from document title page. Document formatted into pages; contains v, 128 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 106-107).

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Дорошенко, Я. В. "Розробка методів локалізації пошкоджень газопроводу для проведення ремонтних робіт". Thesis, Івано-Франківський національний технічний університет нафти і газу, 2006. http://elar.nung.edu.ua/handle/123456789/4099.

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Дисертацію присвячено розробці методів локалізації наскрізних дефектів газопроводу з метою забезпечення можливості проведення ремонтних робіт без припинення транспортування газу та локалізації ділянок газопроводу з метою забезпечення можливості заміни протяжних дефектних ділянок, застарілих та дефектних кранових вузлів без випорожнення і продувки трубопроводу. локалізації місця витоку в потоці транспортованого газу до місця аварійного витоку та вплив часткового перекриття газопроводу пристроєм на ефективність його роботи. Досліджено вплив динамічно прикладених навантажень на конструкцію пристр

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Jadeja, Jayrajsinh. "A model for increasing yield in sawmills based on detection of subsurface defects in canted logs using ground penetrating radar (GPR) system." Morgantown, W. Va. : [West Virginia University Libraries], 2007. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5449.

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Thesis (M.S.)--West Virginia University, 2007.<br>Title from document title page. Document formatted into pages; contains ix, 106 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 75-76).

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Branscome, Ewell Caleb. "A Multidisciplinary Approach to the Identification and Evaluation of Novel Concepts for Deeply Buried Hardened Target Defeat." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/14092.

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The objective of the work described was to identify and explore a paradigm shifting solution that could offer leap-ahead capabilities to counter current and future DBHT threats while mitigating or eliminating the self-deterrence issue. A multidisciplinary approach to the problem was formulated and implemented. Systematic evaluation of DHBT defeat alternatives lead to the selection of a thermal subterrene as a hypothetical means of providing such a capability. A number of possible implementation alternatives for a thermal subterrene were investigated, resulting in the identification of the Radi

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Wan, Sembok Wan Zaliha Binti. "Regulation of fruit colour development, quality and storage life of ‘Cripps Pink’ apple with deficit irrigation and plant bioregulators." Thesis, Curtin University, 2009. http://hdl.handle.net/20.500.11937/2316.

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Poor and erratic fruit colour development in ‘Cripps Pink’ apple causes serious economic losses to the growers and/or exporters of Western Australia and other parts of the world. Many internal and external factors such as genetic, light, temperature, irrigation, application of chemicals and also soil and tree factors affect the biosynthesis of anthocyanins consequently fruit colour. Some of the past approaches followed to improve fruit skin colour resulted in limited outcomes. The aim of my research was to evaluate the effects of water saving strategies and newly developed plant bioregulators

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TSAI, YU-TSE, and 蔡育澤. "Using Ground Penetration Radar(GPR) to Inspect the Internal Defects ofBuilding Stone." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/59uxnf.

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碩士<br>中華大學<br>土木工程學系<br>107<br>In recent years, the stone processing industry in Taiwan has undergone emerging periods, booming development, and financial crises. Now with the rising public awareness of environmental protection, many operators in the stone processing industry have attempted to transform their business model to reduce the costs and increase the overall profits. This study was conducted for the perspective of stone raw material costs. Due to the marble and granite size is standardized to concur with vehicle restriction for transportation during importing, marble and granite may

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Books on the topic "Penetration defect"

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Noblett, J. E. A stress intensity factor solution for root defects in fillet and partial penetration welds. TWI, 1996.

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United States. National Aeronautics and Space Administration., ed. Prediction and verification of ductile crack growth from simulated defects in strength overmatched butt welds: A thesis ... National Aeronautics and Space Administration, 1997.

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Bender, Morris B., Hans-Lukas Teuber, and William S. Battersby. Visual Field Defects after Penetrating Missile Wounds of the Brain. Harvard University Press, 2013.

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Bender, Morris B., Hans-Lukas Teuber, and William S. Battersby. Visual Field Defects after Penetrating Missile Wounds of the Brain. Harvard University Press, 2014.

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Chebbi, Chiheb. Advanced Infrastructure Penetration Testing: Defend your systems from methodized and proficient attackers. Packt Publishing - ebooks Account, 2018.

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Monaghan, Nicola. 8. Sexual offences. Oxford University Press, 2018. http://dx.doi.org/10.1093/he/9780198811824.003.0008.

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Without assuming prior legal knowledge, books in the Directions series introduce and guide readers through key points of law and legal debate. Questions, diagrams, and exercises help readers to engage fully with each subject and check their understanding as they progress. This chapter explores the main sexual offences, including rape, assault by penetration, sexual assault, and intentionally causing a person to engage in sexual activity. It considers the defence of consent in sexual offences and the statutory presumptions relating to consent. Finally, it explores sexual offences committed agai

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Demetriades, Demetrios, Leslie Kobayashi, and Lydia Lam. Cardiac complications in trauma. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199687039.003.0062.

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Post-traumatic cardiac complications may occur after penetrating or blunt injuries to the heart or may follow severe extracardiac injuries. The majority of victims with penetrating injuries to the heart die at the scene and do not reach hospital care. For those patients who reach hospital care, an immediate operation, sometimes in the emergency room, cardiac injury repair, and cardiopulmonary resuscitation provide the only possibility of survival. Many patients develop perioperative cardiac complications such as acute cardiac failure, cardiac arrhythmias, coronary air embolism, and myocardial

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Demetriades, Demetrios, Leslie Kobayashi, and Lydia Lam. Cardiac complications in trauma. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199687039.003.0062_update_001.

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Post-traumatic cardiac complications may occur after penetrating or blunt injuries to the heart or may follow severe extracardiac injuries. The majority of victims with penetrating injuries to the heart die at the scene and do not reach hospital care. For those patients who reach hospital care, an immediate operation, sometimes in the emergency room, cardiac injury repair, and cardiopulmonary resuscitation provide the only possibility of survival. Many patients develop perioperative cardiac complications such as acute cardiac failure, cardiac arrhythmias, coronary air embolism, and myocardial

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Lam, Lydia, Leslie Kobayashi, and Demetrios Demetriades. Cardiac complications in trauma. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780199687039.003.0062_update_002.

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Post-traumatic cardiac complications may occur after penetrating or blunt injuries to the heart or may follow severe extracardiac injuries. The majority of victims with penetrating injuries to the heart die at the scene and do not reach hospital care. For those patients who reach hospital care, an immediate operation, sometimes in the emergency room, cardiac injury repair, and cardiopulmonary resuscitation provide the only possibility of survival. Many patients develop perioperative cardiac complications such as acute cardiac failure, cardiac arrhythmias, coronary air embolism, and myocardial

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Lam, Lydia, Leslie Kobayashi, and Demetrios Demetriades. Cardiac complications in trauma. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199687039.003.0062_update_003.

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Post-traumatic cardiac complications may occur after penetrating or blunt injuries to the heart or may follow severe extracardiac injuries. The majority of victims with penetrating injuries to the heart die at the scene and do not reach hospital care. For those patients who reach hospital care, an immediate operation, sometimes in the emergency room, cardiac injury repair, and cardiopulmonary resuscitation provide the only possibility of survival. Many patients develop perioperative cardiac complications such as acute cardiac failure, cardiac arrhythmias, coronary air embolism, and myocardial

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Book chapters on the topic "Penetration defect"

1

Glickman, Evgeny E. "On the Kinetic Mechanism of Ga Penetration in Al Bicrystals under Small Residual Stress." In Defect and Diffusion Forum. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/3-908451-17-5.201.

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Glickman, Evgeny E., M. Levenshtein, L. Budic, and N. Eliaz. "Surface Spreading and Penetration of Liquid and Solid Ga in Thin Polycrystalline Ag Films." In Defect and Diffusion Forum. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/3-908451-17-5.219.

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Kozlova, Olga, and Alexey Rodin. "Liquid Ga Penetration along Al Grain Boundaries: Effect of External Stress and Ga Undercooling." In Defect and Diffusion Forum. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/3-908451-17-5.231.

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Khalifa, Dorsaf, and Foued Mzali. "Study of the Effect of Mould Sand Properties Variation on the Severity of Metal Penetration Defect: An Industrial Case Study." In Lecture Notes in Mechanical Engineering. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-57324-8_35.

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Han, Qing, Yihui Huang, Chaochen Li, et al. "Non-destructive Detection of Grouting Defects Behind Shield Tunnel Wall by Combining Ground Penetrating Radar with Seismic Wave Method." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1748-8_8.

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AbstractThe shield construction is a mature tunnel construction technology. Grouting behind segment wall synchronously during shield construction is an important measure to control stratum deformation, reduce ground settlement and prevent tunnel water seepage. The quality of grouting can significantly affect the quality of tunnel construction. The method of grouting quality judgment in early tunnel construction is inefficient and uncertain. To ensure the safety of tunnel structure, it is an urgent technical innovation to study the non-destructive testing technology for grouting effect of shiel

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Wei, Zheng, Jianqiang Zhou, Kexin Wang, and Xiaowen Hu. "Deep Migration Learning-Based Detection of Structural Diseases in Railway Tunnel Lining Structures." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-2417-8_11.

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AbstractIt is difficult to quickly and accurately detect defects such as voids, voids, and non compactness in the lining structure of formed railway tunnels. We have conducted in-depth research on the propagation law of ground penetrating radar electromagnetic waves in tunnel lining structures and intelligent detection methods based on deep learning. The finite difference method was applied to numerically simulate the propagation process of electromagnetic waves in tunnel lining structures with different diseases. B-scan radar images were obtained, and the characteristics of voids, voids, and

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Zantua, Morgan A., Viatcheslav Popovsky, Barbara Endicott-Popovsky, and Fred B. Holt. "Discovering a Profile for Protect and Defend: Penetration Testing." In Learning and Collaboration Technologies. Learning and Teaching. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-91152-6_41.

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Yue, Xin, Jijun Zhao, and Jieshan Qiu. "Hydrogen Adsorption and Penetration of Cx (x=58-62) Fullerenes with Defects." In Computational Science – ICCS 2007. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-72586-2_40.

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Li, Zan, Xiao Zhou, and Jianjun Yu. "Repair and Reconstruction of Penetrating Defects in Oral-Maxillofacial Area." In Plastic and Reconstructive Surgery. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3400-8_7.

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Weigand, Chrystle, and Jeffrey Harper. "Decapitation Crosses to Test Pollen Fertility Mutations for Defects in Stigma-Style Penetration." In Pollen and Pollen Tube Biology. Springer US, 2020. http://dx.doi.org/10.1007/978-1-0716-0672-8_3.

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Conference papers on the topic "Penetration defect"

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Nielsen, L. V., and F. Galsgaard. "Sensor Technology for On-Line Monitoring of AC-Induced Corrosion along Pipelines." In CORROSION 2005. NACE International, 2005. https://doi.org/10.5006/c2005-05375.

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Abstract Pipelines routed in parallel with overhead electric power transmission lines and/or AC-traction railways results in induced AC-voltages on pipelines that may cause corrosion sometimes with penetration rates in excess of 10 mm/yr despite properly imposed cathodic protection. Due to the increasing demand from pipeline operators a concept for AC corrosion detection has been presented which is based on an instrumented coupon device with capabilities of logging corrosion condition as well as electrical fingerprints on the coupon buried in the ground along the pipeline and electrically conn

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Rose, J. L., D. Jiao, S. P. Pelts, J. N. Barshinger, and M. J. Quarry. "Hidden Corrosion Detection with Guided Waves." In CORROSION 1997. NACE International, 1997. https://doi.org/10.5006/c1997-97292.

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Abstract A corrosion detection feasibility study with ultrasonic guided waves is presented. Rather than use normal beam ultrasonic techniques that move point by point over the structure being examined, guided waves are more global in nature allowing examination of regions over 2-3 cm on up to 4-5m with reasonable efficiency in corrosion detection and in estimating average wall thickness between the two transducers. A sample problem in aging aircraft inspection for fuselage thinning is studied and used to illustrate the guided wave inspection procedure and potential for classification and sizin

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Attarzadeh, N., S. Sh Abedi, and J. Neshaty. "Electrochemical Behavior of Passive Film Formed on Ni-Cr-Mo Alloy 625 in Neutral Sodium Chloride Solution." In CORROSION 2012. NACE International, 2012. https://doi.org/10.5006/c2012-01319.

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Abstract The present work investigates the electrochemical behavior of passive film formed on Ni-Cr-Mo alloy 625 in potentials ranging from -100 to 700 mVSCE using various techniques, including potentiodynamic polarization, potentiostatic polarization, Electrochemical Impedance Spectroscopy (EIS), and Mott-Schottky (M-S) analysis in neutral 3.5 wt.% NaCl solution. These comprehensive studies show that the passive film properties might be divided into two potential regions, which the manifestation of Region I likely lasts 200 mVSCE, and Region II dominates at higher potentials. For Region I, wh

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Pellizzari, Massimo, Zhao Zhao, Edoardo Tronconi, Matteo Perini, Sasan Amirabdollahian, and Faraz Deirmina. "Post-Process Heat Treatment of Tool Steel Dies Repaired by Laser Direct Energy Deposition." In IFHTSE 2024. ASM International, 2024. http://dx.doi.org/10.31399/asm.cp.ifhtse2024p0173.

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Abstract Mold repair is a viable strategy for saving energy and reducing CO2 emissions. Papers in the literature show that repairing a limited damaged area of the mold instead of producing a new one is becoming increasingly attractive, especially considering the latest European and international regulations introduced with the green deal. In this paper, the authors are pleased to present some preliminary results related to the repair of AISI H13 tool steel molds by Laser-Directed Energy Deposition. Steel blocks (20 x 55 x 100 mm3), previously tempered at 435±10 HV, were machined to reproduce t

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Leon-Henao, Henry, Kaue C. Riffel, Andres Acuna, and Antonio J. Ramirez. "Assessment of Super Duplex Stainless Steel Welding using Hyper Duplex Filler Metal: Microstructure and Corrosion Performance." In AM-EPRI 2024. ASM International, 2024. http://dx.doi.org/10.31399/asm.cp.am-epri-2024p0573.

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Abstract Super Duplex stainless steels (SDSS) are alloys based on the Fe-Cr-Ni-N system. The chemical composition is tailored to achieve a balanced microstructure of 50% ferrite and 50% austenite. Hyper Duplex Stainless Steels (HDSS) are also duplex materials distinguished by their remarkable yield strength (≥700 MPa) and corrosion resistance (PREN&gt;48). They have been developed as an alternative to the well-established SDSS when superior mechanical and corrosion performance is required. This enhanced performance is attributed to alloying additions, primarily Cr, Mo, and N. In this study

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Chandrasekaran, Kamali. "Obtaining smoothed airdata during wake penetrations and atmospheric disturbances." In 2024 IEEE Space, Aerospace and Defence Conference (SPACE). IEEE, 2024. http://dx.doi.org/10.1109/space63117.2024.10668121.

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Prasanth, Aavani, Abhinav P, Anagh Ramachandran, Anjana Kanakaraj, K. Sajith, and Ajith K. K. "Experimental Ground Penetrating Radar Using Vector Network Analyzer." In 2024 IEEE Space, Aerospace and Defence Conference (SPACE). IEEE, 2024. http://dx.doi.org/10.1109/space63117.2024.10668133.

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Goyal, Pramod, Sangeeta Tarai, Subrata Maiti, and Prasun Chongder. "Classification of Ground penetrating radar data using YOLOv8 model." In 2024 IEEE Space, Aerospace and Defence Conference (SPACE). IEEE, 2024. http://dx.doi.org/10.1109/space63117.2024.10668297.

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Zhan, Pengwen. "Comparative study on penetration and eddy current testing for welding defects in aluminum alloy." In Fourth International Conference on Testing Technology and Automation Engineering (TTAE 2024), edited by Sumeet S. Aphale and Ajit Jha. SPIE, 2024. https://doi.org/10.1117/12.3055383.

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Assous, Said, James Whetton, and Mark Bacciarelli. "Magnetic Flux Leakage Data Processing for Casing Inspection: An Inversion Approach." In International Petroleum Technology Conference. IPTC, 2021. http://dx.doi.org/10.2523/iptc-21167-ms.

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Abstract Measurements of magnetic flux leakage are used extensively to map and monitor defects and corrosion in pipelines, well casings, and storage tanks. The application of this method enables locating defects and determining metal loss. The measurements have complex response characteristics, which must be understood to optimize measurement design and data processing choices. Until recently, the industry lacked an adequate first principles description of sensitivity to defect penetration and size, including the foundational cases of circular and elliptical defects. An inversion method has be

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Reports on the topic "Penetration defect"

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Chin, B. A. Weld penetration and defect control. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/5198665.

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Chin, B. A. Weld penetration and defect control. Final report. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/10151974.

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MENDEZ, P. F., and T. W. EAGAR. PENETRATION AND DEFECT FORMATION IN HIGH CURRENT ARC WELDING. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/835707.

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Nguyen, Hung. DTPH56-14-H-CAAP02 Wall Break-Through in Composite Repaired Defects. Pipeline Research Council International, Inc. (PRCI), 2017. http://dx.doi.org/10.55274/r0011839.

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Composite materials installed on pipelines where damage generated by corrosion or erosion that begins as a wall-loss defect that can transition to a through-wall defect. Critically, the damage generated by the process tends to have a region of diffuse wall loss surrounding a through-wall penetration. Design qualification of repairs for through-wall defects are performed using simulated flaws manufactured by drilling through the pipe wall. This creates straight-sided flaws with significant remaining stiffness, very different from the diffuse, tapered flaws produced by erosion or corrosion. This

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Anderson, Jr, Behner Charles E., Holmquist Thilo, Orphal Timothy J., Wickert Dennis L., and Matthias. Dwell, Interface Defeat, and Penetration of Long Rods Impacting Silicon Carbide. Defense Technical Information Center, 2009. http://dx.doi.org/10.21236/ada637030.

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Hayford. L51566 Ultralow Frequency Eddy Current Instrument for the Detection and Sizing of Stress Corrosion Cracks. Pipeline Research Council International, Inc. (PRCI), 1988. http://dx.doi.org/10.55274/r0010601.

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Eddy current testing has received only limited application to ferrous materials because the high permeability of the material in combination with the normally high frequency of the eddy current instrument results in a very small depth of penetration of the eddy currents into the material. The objectives of this research program were threefold. The first goal was to develop an eddy current instrument with frequencies low enough to penetrate pipeline steel. The second was to use the new instrument to develop techniques for locating stress corrosion cracks (SCC) on coated pipelines without requir

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Davis. L51674 In-Line Inspection Device for Stress Corrosion Cracks. Pipeline Research Council International, Inc. (PRCI), 1992. http://dx.doi.org/10.55274/r0010617.

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�Under previous programs for the Pipeline Research Committee, field tested a low frequency eddy current instrument for detecting and characterizing stress corrosion cracks in pipelines was developed. While a significant improvement over conventional magnetic particle inspections in some respects, the eddy current method as it was developed in these programs can only be used with surface breaking defects. Thus, it is limited to use for inspections of pipelines from the outside surface. In this program, we examined the use of a saturating magnetic field to allow increased penetration of the eddy

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