Informatics Publishing Limited

S. V. Ranganayakulu ¹, Samrat Goud Burra ¹, B. Ramesh Kumar ², B. Sreenivasa Verma ³

Affiliations
1 Centre for Non Destructive Evaluation, Guru Nanak Institutions, Technical Campus, Ibrahimpatnam-501506, IN
2 Institute for Plasma Research, Bhat, Gandhinagar-382428, IN
3 Dept. of Mechanical Engineering, CMRIET, Hyderabad-501401, IN

Abstract

The present paper reports the weld quality evaluations carried on EN-08 mild steel samples fabricated with Tungsten Inert Gas (TIG) welding process. Different weld inspection techniques are applied on the welds and the details of weld defects analysis has been carried. Ultrasonic tests and Gamma and X-ray radiography methods are useful to find the internal weld joint defects. Liquid penetration and magnetic particle inspection techniques are suitable for surface and subsurface defects in weld samples. The kind of the weld defects and their nature in terms of the weld defect quantification and quality evaluation with each applicable NDT techniques is highlighted.

Keywords

Quality Control, NDT, Magnetic Field Leak, Acoustic Impedance.

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S. V. Ranganayakulu ¹, A. Kucheludu ¹, R. Gowtham ¹, B. Ramesh Kumar ²

Affiliations
1 Center for Non Destructive Evaluation, Gurunanak Institutions Technical Campus, Hyderabad-501506, Andhra Pradesh, IN
2 Institute for Plasma Research, Bhat, Gandhinagar-382428 Gujarat, IN

Abstract

Aluminum alloys consist of different grade namely HE-15, 30, and 20 respectively. These alloys are selected from 6XXX series of aluminum group. All the alloys are fabricated from machining into rectangle shape in the form of 150mm in length, 120mm in width and 12mm in thickness. The main concept arises during the interpretation of alloys is defects are notified. The defects are traced out from the aluminum alloys by NDT methods, ultrasonic method and liquid penetrant method. These NDT techniques are conducted on the all aluminum alloys according to ASNT procedure to trace out defects in the materials. After, pulse-echo method of A-scans and experimented on the aluminum alloys, On the other hand water soluble dye penetrant test also performed to trace out the surface defects. Lastly, various orientations of defects are mapped out through the implementation of NDT methods and remedy behind the defects are traced out due to improper handling of welding process.

Keywords

Aluminum Alloys, NDT Methods, Pulse-Echo Technique, Liquid penetrant Method, A-Scan.

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S. V. Ranganayakulu ¹, Samrat Goud Burra ¹, Sanathana Ravi ²

Affiliations
1 Centre for Non Destructive Evaluation, Guru Nanak Institutions Technical Campus, Ibrahimpatnam – 501506, Telangana, IN
2 R&D Center, Rural Development Society, Punjagutta, Hyderabad – 500082, Telangana, IN

Abstract

Background/Object: Non-destructive Testing (NDT) methods are valuable tools in quality assurance of weldments in engineering and technology. The objective of this paper is to evaluate the structural health monitoring of the weldments through NDT methods. Methods/Analysis: The samples taken for these studies are extensively used in Aerospace and industrial applications. The dimensions of fabricated samples of stainless steel and mild steel is 300 mm × 180 mm × 10 mm, D3 tool steel is 180 mm × 150 mm × 25 mm, Aluminum is 150 mm × 120 mm × 10 mm and Titanium is 160 mm × 60 mm × 2 mm. These samples are subjected to Gas Tungsten Arc welding (GTAW) during welding artificial defects are incorporation by altering the weld parameters. The profile of weld defects is studied by using basic Non-Destructive Testing techniques. Findings: Defects which are open to surface and subsurface defects up to 6mm depth are detected by Visual Inspection (VI), Liquid Penetrant Test (LP) and Magnetic Particle Inspection (MPI) techniques. Ultrasonic - B scan NDT technique is adapted for study of thickness profile of weld region of weldments found distinct result in aluminum weldments. Orientation and Internal of defects of the weldments were detected by Gamma ray Radiography and Ultrasonic Testing methods found forging material inclusion in SS material, Aluminum weldments. Application/Improvements: These evaluation studies through Nondestructive Testing techniques are much useful for structural health monitoring of the weldments.

Keywords

Characterization, Evaluation, Non Destructive Testing, Weldments, Defects.

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Tribhuvan Singh ¹, Harvinder Singh Saini ², S. V. Ranganayakulu ², S. Ravi ³, K. Sudhakar ³

Affiliations
1 Guru Nanak Institutions Technical Campus - School of Pharmacy Ibrahimpatnam, Telangana - 501506, IN
2 Guru Nanak Institutions Technical Campus - School of Engineering and Technology Ibrahimpatnam, Telangana - 501506, IN
3 Rural Development Society, R&D Center, Punjagutta, Hyderabad - 500082, Andhra Pradesh, IN

Abstract

Objectives: To isolate Azadirachtin-A, from Seeds of Azadirachta indica and to perform molecular docking studies for antiproliferative activity against cervical cancer. Methods: The Current studies on Azadirachtin-A, a potent cervical anticancer agent, was designed for the isolation of Azadirachtin-A, from neem fruits collected from local area (Ibrahimpatnam), the seeds were first separated, dried and made in to coarse powder. The seed kernels was defatted and extracted with methanol using soxhlet apparatus. Methanolic extract of seeds were subjected to direct reverse phase High Performance Liquid Chromatography (HPLC) for separation of Azadirachtin-A, by molecular docking of Azadirachtin-A, using Molecular Operating Environment (MOE) 2008 software Findings: This revealed that Azadirachtin-A, has an affinity of 59.2% and 72% towards amino acids like Glycine 131 and Lysine 89 with polar intractions. Azadirachtin-A, found to interact with Cyclin E, was retrieved from the Protein Data Bank (PDB code: 1W98). The Azadirachtin-A, showed excellent, Increase Life Span (63.44 and 82.56), reduced the viable cells (30.4 ± 1.5 and 24.5 ± 1.6), and tumor volume (1.2 ± 0.05 and 1.0 ± 0.05) when compared to standard drug 5-Fluorouracil. Application: Azadirachtin-A, showed significant docking interaction with Cyclin E, active site using windows 2002, MOE 2008 software. Result showed that Azadirachtin-A, may lead to potent cervical anticancer agent.

Keywords

Azadirachtin-A, Azadirachta indica, Cervical Cancer, 5-Fluorouracil, (HeLa) Henrietta Lacks Cell Line, Molecular Docking.

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