Root cause analysis and reliability improvement methods for orbital TIG welding process for propulsion feed system of satellites

Karthikeyan, M.; Naikan, V. N. A.; Narayan, Ram

doi:10.1007/s13198-016-0549-5

Cited by 4 publications

(5 citation statements)

References 6 publications

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“…In the second solution, argon gas is introduced into the pipe to regulate temperature and ensure a stable welding environment. This approach aligns with the findings presented in a referenced paper [8], which highlights the importance of certain factors, such as achieving the correct penetration depth and grain width, to gain maximum tensile strength. Increasing the welding current raises the temperature and heat input, which leads to a deeper weld penetration.…”

Section: Discussion Of the Experimental Results Of Tensile Strength A...supporting

confidence: 86%

“…However, even with these insights, the issue of copper's weldability using TIG welding still requires more research to address adequately. Although some research has been conducted in this area, particularly [8], the extent of studies on the utilization of TIG welding for orbital applications is still quite restricted. The work in [8] focuses on optimizing orbital TIG welding process parameters using a systematic approach, explicitly employing the Taguchi method.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…Although some research has been conducted in this area, particularly [8], the extent of studies on the utilization of TIG welding for orbital applications is still quite restricted. The work in [8] focuses on optimizing orbital TIG welding process parameters using a systematic approach, explicitly employing the Taguchi method. When examining the welding of stainless-steel tubes for satellite propulsion feed systems, it becomes evident that the welding current is the primary factor affecting welding quality, closely followed by the welding speed.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Identifying the influence of orbital pipe welding parameters on mechanical properties using SS316L pipe

Prasetyo,

Baskoro,

Widyianto

et al. 2023

EEJET

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Pipeline systems play a pivotal role across various industries, serving as the lifelines for transporting materials like oil, water, and gas. Among the welding techniques, orbital pipe welding, particularly Gas Tungsten Arc Welding (GTAW) without filler metal, is the fitting method for joining these critical piping systems. This study examined orbital pipe welding on SS316L pipes with a 114-mm outer diameter and 3-mm thickness. The main goal was to evaluate the weld's tensile strength and microhardness carefully. Constant current and three welding speeds – 1.3, 1.4, and 1.5 mm/s – achieved this goal. In addition, welding experiments covered 0°, 90°, 180°, and 270° pipe positions. First, the necessary tools and test objects were prepared, and then the test materials were welded. The final phase was testing tensile strength and microhardness. This investigation used a 5G-specific prototype orbital pipe welding equipment. The 5G method requires horizontal welding with the vertical pipe axis. The study used ASTM E-8M-compliant standardized test material for precise and repeatable tensile strength measurements. This standardization ensured outcomes reliability. One of the significant findings was that 1.4 mm/s welding at the 270° pipe position with 110A current produced the maximum tensile strength. This shows that these conditions are best for welding SS316L-type stainless steel pipes with an outside diameter of 114 mm and a thickness of 3 mm. Strangely, microhardness testing showed that horizontal distribution welding quality decreased at 1.4 mm/s. This implies that further experimentation may be needed to fine-tune the welding parameters to optimize the process and achieve superior microhardness values.

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Section: Discussion Of the Experimental Results Of Tensile Strength A...supporting

confidence: 86%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

See 1 more Smart Citation

Identifying the influence of orbital pipe welding parameters on mechanical properties using SS316L pipe

Prasetyo,

Baskoro,

Widyianto

et al. 2023

EEJET

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show abstract

“…Failure prioritization using FMEA The Failure Modes and Effect Criticality Analysis (FMECA) has been used for long, to predict the consequences of failures in systems and assists to identify failures in advance so that failure effects can be reduced, if not eliminated from the system (Karthikeyan et al 2017). On one hand, the criticality analysis (CA) is used to prioritize the failure modes in terms of importance quantified based on combined severity and frequency of failure.…”

Section: 1mentioning

confidence: 99%

“…For the reason that multiplying ordinal numbers for the RPN leads to criticality index, which ranges from 1 to 1000, hence deriving precise equipment failure criticality is not straightforward. Nonetheless, the RPN approach has been widely studied by different authors (Feili et al 2013;Du et al 2014;Gaula and Sharma 2015;Sinha and Mukhopadhyay 2015;Li et al 2016;Karthikeyan et al 2017).…”

Section: 1mentioning

confidence: 99%

A cost-based failure prioritization approach for selecting maintenance strategies for thermal power plants: a case study context of developing countries

Wakiru

Muchiri

Pintelon

et al. 2019

Int J Syst Assur Eng Manag

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The Failure Mode and Effect Analysis (FMEA) employing the Risk Priority Numbers (RPN) have been used extensively for identifying and prioritizing failure modes with a view of mitigating their impact on equipment failure. However, in its traditional form, the prioritization approach through the RPN lacks the objectivity required for robust risk assessment, more so, where maintenance data is available, which could enhance such objectivity. This paper extends a quantitative approach for prioritizing failure modes and component failures in facilities, and more specifically, leverages on maintenance data often recorded in such facilities. To enhance the objectivity of the risk prioritization process, the proposed approach integrates three objective measuresthe cost of failure, failure occurrence rate and percentage downtime effects of equipment failure. The integrated measures are demonstrated as more robust for prioritizing risks as opposed to ordinal indices as the case in the conventional FMEA approach. Using historical maintenance records, a three-step ranking approach is proposed for prioritizing critical failure modes in a thermal power plant where a case study is discussed. Moreover, the study compares the results derived from the prioritization approach with that derived utilizing the conventional RPN method. The comparative study demonstrates the added value of a more objective and quantitative prioritization approach for maintenance decision support. Ultimately, the critical failure modes are evaluated using a decision scheme to allocate appropriate maintenance strategies as the final step of risk assessment (i.e. risk treatment). The proposed approach is viewed as generalizable, intuitive and offering insights to the maintenance practitioners.

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Fault diagnosis of automobile systems using fault tree based on digraph modeling

James

Gandhi

Deshmukh

2017

Int J Syst Assur Eng Manag

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Root cause analysis and reliability improvement methods for orbital TIG welding process for propulsion feed system of satellites

Cited by 4 publications

References 6 publications

Identifying the influence of orbital pipe welding parameters on mechanical properties using SS316L pipe

Identifying the influence of orbital pipe welding parameters on mechanical properties using SS316L pipe

A cost-based failure prioritization approach for selecting maintenance strategies for thermal power plants: a case study context of developing countries

Fault diagnosis of automobile systems using fault tree based on digraph modeling

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