Relevant bibliographies by topics / Weldability lobe

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  2. Conference papers

Academic literature on the topic 'Weldability lobe'

Author: Grafiati
Published: 4 June 2025
Last updated: 14 July 2025

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Journal articles on the topic "Weldability lobe"

1

Zhang, Xiao Yun, Yan Song Zhang, and Guan Long Chen. "Research on Weldability for Dual-Phase Steels Using Servo Gun Spot Welding System." Key Engineering Materials 353-358 (September 2007): 1597–600. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.1597.

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Dual-phase steel is a mixture of ferrite matrix and martensitic islands distributed at grain boundaries with the possible addition of bainite. Its formability, capacity to absorb crash energy, and ability to resist fatigue make it a desirable material for use in the automotive industry to enhance automobile’s strength and reduce its weight. However, the resistance spot weldability of dual-phase steel is sometimes limited by a propensity for weld metal failure due to the welding process. To improve its weldability, a servo gun spot welding system is introduced to control electrode force during
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2

Fukumoto, Shinji, Taiju Matsuo, Daisuke Kuroda, and Harushige Tsubakino. "Micro-Resistance Spot Welding of Nickel Free Austenitic Stainless Steel." Materials Science Forum 539-543 (March 2007): 4081–86. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.4081.

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Micro-resistance spot weldability of nickel free stainless steel sheet was studied to fabricate medical implants. Weld lobe was established and the effect of welding parameters on joint strength was investigated. Weld nugget represented a rapidly quenched austenitic cellular structure whose cell size is several μm with a little ferrite. The amount of δ-ferrite in weld nugget is smaller than that predicted by some Schaefller diagrams due to rapid solidification during micro-resistance spot welding.
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3

Brechelt, Sascha, Philipp Neef, Henning Wiche, and Volker Wesling. "Spot weld bonding − process behavior of three-sheet steel stack‑ups and analysis strategies with online measuring methods." Manufacturing Review 7 (2020): 3. http://dx.doi.org/10.1051/mfreview/2019029.

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Due to the increased demands for reducing CO2 emissions, improving fuel efficiency of modern vehicles has been continuously monitored. The body of a typical compact car design has a weight share of approx. 40%. In addition to increasing torsional stiffness and crash safety of the body, the aim is also to reduce the overall weight at the same time. In order to achieve these individual requirements, the use of three-sheet steel stack-ups with adhesive applications for car body construction is one of the current strategies used in automobile manufacturing. Adhesive applications lead to a change i
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4

Kim, Sehyeon, Seonghwan Park, Mingyu Kim, Dong-Yoon Kim, Jiyong Park, and Jiyoung Yu. "Weldability of Additive Manufactured Stainless Steel in Resistance Spot Welding." Metals 13, no. 5 (2023): 837. http://dx.doi.org/10.3390/met13050837.

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The manufacture of complicated automobile components that are joined by resistance spot welding requires considerable cost and time. The use of additive manufacturing technology to manufacture automobile components helps reduce the overall time consumption and yields high accuracy. In this study, the weldability of conventional (C) 316L stainless steel and additive manufactured (AM) 316L stainless steel was evaluated and analyzed. After deriving the lobe diagram for both the materials, the monitoring data, nugget diameter, tensile shear strength, and hardness were analyzed. The findings of the
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5

Daws, Kasim Mohammed, Moneer Hammed Al-Saadi, and Ihsan Kadhom Abbas Al-Naimi. "Investigation Parameters of Resistance Spot Welding For AA1050 Aluminum Alloy Sheets." Journal of Engineering 18, no. 10 (2023): 1128–41. http://dx.doi.org/10.31026/j.eng.2012.10.04.

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The parameters of resistance spot welding (RSW) performed on low strength commercial aluminum sheets are investigated experimentally, the performance requirements and weldability issues were driven the choice of a specific aluminum alloy that was AA1050. RSW aluminum alloys has a major problem of inconsistent quality from weld to weld comparing with welding steel alloys sheet, due to the higher thermal conductivity, higher thermal expansion, narrow plastic temperature range, and lower electrical resistivity. Much effort has been devoted to the study of describing the relation between the param
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6

Morales-Sánchez, Gerardo, Antonio Collazo, and Jesús Doval-Gandoy. "Influence of the Process Parameters on the Quality and Efficiency of the Resistance Spot Welding Process of Advanced High-Strength Complex-Phase Steels." Metals 11, no. 10 (2021): 1545. http://dx.doi.org/10.3390/met11101545.

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In this study, the effects of electrical characteristics of an inverter combined with main welding parameters on the resistance spot weldability of advanced high strength steels (AHSS) CP1000 is investigated. The main welding parameters, current and time, were varied. The effects on the geometry and microstructure of the weld spot, the diameter of the weld pad, the hardness, the shear strength, and the efficiency of the process were studied, and the results were compared for two switching frequencies of the medium frequency converter. Furthermore, the weldability lobes were obtained as a funct
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7

Asari, Mohd Rashidi. "Resistance Spot Welding - Development of Process Parameters (Weldability Lobe) Simulation." Scholar Journal of Applied Sciences and Research 2, no. 7 (2019). https://doi.org/10.13140/RG.2.2.23027.17446.

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A simple mathematical modelling to develop resistance spot welding - process parameter (weldability lobe) simulation. This graphical weldability lobe is used to ease engineers and technicians to select the optimized welding parameters that suit with sheet metal and equipment to be used at production line side.
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8

Li, Zhuoran, Dianping Zhang, Ruiming Chen, et al. "Improving Weldability of Press Hardened Steel through Combining Stepped Current Pulse and Magnetically Assisted Resistance Spot Welding Process." Journal of Manufacturing Science and Engineering, October 27, 2023, 1–23. http://dx.doi.org/10.1115/1.4063904.

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Abstract Press-hardened steel (PHS) with extremely high strength has wide applications in vehicle body manufacturing as an innovative lightweight material. However, the poor weldability of PHS results in poor weld toughness and a high risk of interfacial fracture, posing challenges to the resistance spot welding (RSW) process. Introducing an external magnetic field in the welding process to perform electromagnetic stirring (EMS), magnetically assisted RSW (MA-RSW) process has been proven an effective method to improve the weld toughness of high-strength steel, but it may increase the risk of e
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9

Gurav, Vinayak, and Divya Shrivastava. "Optimization and predictive modeling of weld nugget size in resistance spot welding of HSLA-65 steel using finite-element simulation and machine learning." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, June 16, 2025. https://doi.org/10.1177/09544089251349256.

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This study presents a comprehensive computational study of resistance spot welding (RSW) for high-strength low alloy (HSLA-65) steel. The weld nugget size is one of the critical quality characteristics defining the spot joint strength. Traditionally, the nugget diameter is evaluated through destructive testing, which is not only costly and time-consuming but also leads to material wastage and is inadequate for real-time monitoring and evaluation. To mitigate these challenges, this research develops and proposes a computational framework that combines design of experiments, optimization, and ma
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10

Morales-Sánchez, Gerardo, Antonio Collazo, and Jesús Doval-Gandoy. "Influence of the Process Parameters on the Quality and Efficiency of the Resistance Spot Welding Process of Advanced High-Strength Complex-Phase Steels." September 28, 2021. https://doi.org/10.3390/met11101545.

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Abstract:
In this study, the effects of electrical characteristics of an inverter combined with main welding parameters on the resistance spot weldability of advanced high strength steels (AHSS) CP1000 is investigated. The main welding parameters, current and time, were varied. The effects on the geometry and microstructure of the weld spot, the diameter of the weld pad, the hardness, the shear strength, and the efficiency of the process were studied, and the results were compared for two switching frequencies of the medium frequency converter. Furthermore, the weldability lobes were obtained as a funct
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Conference papers on the topic "Weldability lobe"

1

Koganti, Ramakrishna, Sergio Angotti, Armando Joaquin, and Cindy Jiang. "Resistance Spot Welding (RSW) of Advanced High Strength Steels (AHSS) for Automotive Body Construction." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-42675.

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There has been a substantial increase in the use of advanced high strength steel in automotive structures in the last few years. The usage of these materials is projected to grow significantly in the next 5–10 years with new safety and fuel economy regulations. Advanced High Strength Steels (AHSS) are getting popular with superior mechanical properties and weight advantages compared to mild steel materials. These new materials have significant manufacturing challenges, particularly for welding and stamping. Proper understanding of the weldability of these materials is critical for successful a
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2

Li, Zhuo-Ran, Ruiming Chen, Yujun Xia, Lin Qi, Ming Lou, and Yongbing Li. "Improve Resistance Spot Weld Quality of Press Hardened Steel by Using Stepped Current Pulse and External Magnetic Field." In ASME 2023 18th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/msec2023-105603.

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Abstract Press-hardened steel (PHS) with extremely high strength has wide applications in vehicle body manufacturing as an innovative lightweight material. However, the poor weldability of PHS results in low weld toughness and a high risk of interfacial fracture, posing significant challenges to the resistance spot welding (RSW) process. Magnetically assisted RSW (MA-RSW) process, which introduces an external magnetic field in the welding process to perform electromagnetic stirring, has been shown to effectively improve the weld toughness for high-strength steel, although it may increase the r
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3

Koganti, Ramakrishna, Sergio Angotti, Arnon Wexler, and Donald F. Maatz. "Resistance Spot Welding (RSW) Process Optimization for Uncoated 1.0 mm Boron to Uncoated 1.0 mm Boron for Automotive Applications." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68378.

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There has been a substantial increase in the use of advanced high strength steel in automotive structures in the last few years. The usage of these materials is projected to grow significantly in the next 5–10 years with the introduction of new safety and fuel economy regulations. Advanced High Strength Steels (AHSS) are gaining popularity due to their superior mechanical properties and weight advantages, as compared to mild steels. These new materials also pose significant manufacturing challenges, particularly for welding and stamping. Proper understanding of the weldability of these materia
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4

Koganti, Ramakrishna, Sergio Angotti, Arnon Wexler, and Donald F. Maatz. "Resistance Spot Welding (RSW) Process Optimization for Uncoated 2.0mm Dual Phase 780 to 2.0 mm Uncoated 2.0 mm Dual Phase 780 (DP780) Steel for Automotive Applications." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68579.

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There has been a substantial increase in the use of advanced high strength steel in automotive structures in the last few years. The usage of these materials is projected to grow significantly in the next 5–10 years with new safety and fuel economy regulations. Advanced High Strength Steels (AHSS) are getting popular with superior mechanical properties and weight advantages compared to mild steel materials. These new materials have significant manufacturing challenges, particularly for welding and stamping. Proper understanding of the weldability of these materials is critical for successful a
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5

Gould, Jerry E., and Warren A. Peterson. "A Detailed Examination of Weldability Lobes for a Range of Zinc-Coated Steels." In SAE International Congress and Exposition. SAE International, 1988. http://dx.doi.org/10.4271/880279.

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6

Koganti, Ramakrishna, and Charles Orsette. "Resistance Spot Welding Evaluation of Complex Phase 780 (CP780) Steel for Automotive Body Structural Applications." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-13319.

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The usage of advanced high strength steel (AHSS) in automotive body structures is projected to grow significantly in the next 5–10 years with the introduction of new safety and fuel economy regulations. This is due to their superior mechanical properties and weight savings potential. These new materials pose significant manufacturing challenges, particularly for welding and stamping. Due to the high strength nature of AHSS materials, higher weld forces and longer weld times are often needed to weld these advanced steels. In this paper, the weldability of Complex Phase 780 (CP780) is discussed
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7

Koganti, Ramakrishna, Adrian Elliott, and Charles Orsette. "Resistance Spot Welding Evaluation of 1.4 mm Electro Galvanized (EG) Dual Phase 780 (DP780) and 1.6 mm Electro Galvanized Transformation Induced Plasticity 780 (TRIP780) Steel for Automotive Body Structural Applications." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-40897.

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The usage of advanced high strength steel (AHSS) in automotive body structures is projected to grow significantly in the next 5–10 years with the introduction of new safety and fuel economy regulations. This is due to their superior mechanical properties and weight savings potential. These new materials pose significant manufacturing challenges, particularly for welding and stamping. Due to the high strength nature of AHSS materials, higher weld forces and longer weld times are often needed to weld these advanced steels. In this paper, the weldability of 1.4 mm electro galvanized (EG) Dual Pha
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8

Koganti, Ramakrishna, and Don Maatz. "Resistance Spot Welding (RSW) Evaluation of Uncoated 1.7 mm Direct Strip Production Complex 700B (DSPC) Steel for Automotive Body Structural Applications." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-13274.

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There has been a substantial increase in the use of advanced high strength steel (AHSS) in automotive structures in the last few years. The usage of these materials is projected to grow significantly in the next 5–10 years with the introduction of new safety and fuel economy regulations. AHSS are gaining popularity due to their superior mechanical properties and use in parts for weight savings potential, as compared to mild steels. These new materials pose significant manufacturing challenges, particularly for welding and stamping. Proper understanding of the weldability of these materials is
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9

Koganti, Ramakrishna, Adrian Elliott, and Donald F. Maatz. "Resistance Spot Welding (RSW) Evaluation of 1.0 mm Usibor® 1500 P to 2.0 mm Usibor® 1500 P Steel for Automotive Body Structure Applications." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-40900.

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Abstract:
There has been a substantial increase in the use of advanced high strength steel (AHSS) in automotive structures in the last few years. The usage of these materials is projected to grow significantly in the next 5–10 years with the introduction of new safety and fuel economy regulations. AHSS are gaining popularity due to their superior mechanical properties and use in parts for weight savings potential, as compared to mild steels. These new materials pose significant manufacturing challenges, particularly for welding and stamping. Proper understanding of the weldability of these materials is
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