Flexural Strength Improvement of Welded Joints Prepared by Vibratory Welding Process

Rao, P. Govinda; Rao, P. Srinivasa; Krishna, A. Murali

doi:10.4018/ijmmme.2015100101

Cited by 7 publications

(8 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Authors observed that providing vibrations during welding process enhances the mechanical properties. Refined grain structure was the main reason for the improvement of mechanical characteristics (Rao et al, 2015a(Rao et al, , 2015b(Rao et al, , 2015c. Kalpna et al explored the vibration amplitude effect on mild steel and stainless steel weld connections (Kalpana et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Vibratory weld conditioning during gas tungsten arc welding of al 5052 alloy on the mechanical and micro-structural behavior

Rao¹,

Rao

Babu

2020

WJE

View full text Add to dashboard Cite

Purpose Vibratory weld conditioning parameters have a great influence on the improvement of mechanical properties of weld connections. The purpose of this paper is to understand the influence of vibratory weld conditioning on the mechanical and microstructural characterization of aluminum 5052 alloy weldments. An attempt is made to understand the effect of the vibratory tungsten inert gas (TIG) welding process parameters on the hardness, ultimate tensile strength and microstructure of Al 5052-H32 alloy weldments. Design/methodology/approach Aluminum 5052 H32 specimens are welded at different combinations of vibromotor voltage inputs and time of vibrations. Voltage input is varied from 50 to 230 V at an interval of 10 V. At each voltage input to the vibromotor, there are three levels of time of vibration, i.e. 80, 90 and 100 s. The vibratory TIG-welded specimens are tested for their mechanical and microstructural properties. Findings The results indicate that the mechanical properties of aluminum alloy weld connections improved by increasing voltage input up to 160 V. Also, it has been observed that by increasing vibromotor voltage input beyond 160 V, mechanical properties were reduced significantly. It is also found that vibration time has less influence on the mechanical properties of weld connections. Improvement in hardness and ultimate tensile strength of vibratory welded joints is 16 and 14%, respectively, when compared without vibration, i.e. normal weld conditions. Average grain size is measured as per ASTM E 112–96. Average grain size is in the case of 0, 120, 160 and 230 is 20.709, 17.99, 16.57 and 20.8086 µm, respectively. Originality/value Novel vibratory TIG welded joints are prepared. Mechanical and micro-structural properties are tested.

show abstract

Section: Introductionmentioning

confidence: 99%

Vibratory weld conditioning during gas tungsten arc welding of al 5052 alloy on the mechanical and micro-structural behavior

Rao¹,

Rao

Babu

2020

WJE

View full text Add to dashboard Cite

show abstract

“…By varying the input parameters of the metal engravers like voltage, frequency and vibrational period the process is done and enhancement of properties are taken place. P.Govinda Rao., et.al., [7][8][9][10][11][12] introduced the new experimental setup for inducing mechanical vibrations through unbalanced weight's. By considering the input parameters like vibrating period for specimens and voltage of the vibromotor.…”

Section: Introductionmentioning

confidence: 99%

Influence of Mode of Power Source on the Mechanical Properties of Vibratory Weld Joints

Rao*,

Prasad,

Suresh

2019

IJITEE

View full text Add to dashboard Cite

Welding plays a major role in modern technology. During welding, a portion of the specimen is subjected to heating. Because of different heating and cooling cycles of the specimen, residual stresses induced in the specimen i.e., mechanical properties gets reduced. To enhance the mechanical properties there are different techniques are available i.e., thermal and non-thermal methods. Vibratory welding is the one of the non-thermal method; mechanical properties of steel specimens are analyzed under with and without vibrations under different power source condition. In this paper input parameters which are considered is straight polarity, reverse polarity and alternate current. Tensile and hardness property of the steel specimen are analyzed and compared with the without vibratory condition.

show abstract

“…Authors observed that post weld vibratory treatment will not influence the crystal structure, the increase in all properties are related to the crystal structure only. Finally, General regression neural network technique (GRNN) based tool has been developed for estimating tensile strength, impact strength, flexural strength and hardness for given input parameters [22][23][24][25][26][27][28][29]. Overcome the disadvantages of the stated above, a vibratory set up have been developed in the current investigation to enrich the mechanical properties of welded joints with the following objectives:…”

Section: Vibratory Weldingmentioning

confidence: 99%

GRNN-Immune Based Strategy for Estimating and Optimizing the Vibratory Assisted Welding Parameters to Produce Quality Welded Joints

Rao¹,

Rao²,

Deepak³

2017

View full text Add to dashboard Cite

Abstract.Welding is the process of producing permanent joints with the application of pressure and/or heat energy. During welding operation, weldments may be subjected to uneven thermal stresses. These stresses influence the metallurgical structure of the component. Due to this, the strength of the weld joint is reduced. Therefore, vibratory weld treatment during welding has been proposed in the present work to enhance the flexural and impact strength of weldments. However, it is found that the mechanical properties have shown nonlinear behavior with the chosen input parameters. Hence, an efficient Neural Network (NN) based prediction tool is developed to approximate the mechanical properties of weldments without performing the experiments, output values can be predicted for the given input values. Further, an immune based strategy is integrated to the developed prediction tool in order to obtain desired quality welded joints.

show abstract

Flexural Strength Improvement of Welded Joints Prepared by Vibratory Welding Process

Cited by 7 publications

References 20 publications

Vibratory weld conditioning during gas tungsten arc welding of al 5052 alloy on the mechanical and micro-structural behavior

Vibratory weld conditioning during gas tungsten arc welding of al 5052 alloy on the mechanical and micro-structural behavior

Influence of Mode of Power Source on the Mechanical Properties of Vibratory Weld Joints

GRNN-Immune Based Strategy for Estimating and Optimizing the Vibratory Assisted Welding Parameters to Produce Quality Welded Joints

Contact Info

Product

Resources

About