28 research outputs found
Advances in plasma arc welding: a review
No full textThe nature of welding in the aeronautical industry is characterized by low unit production, high unit cost, extreme reliability and severe service conditions. These characteristics point towards more expensive and more concentrated heat sources such as plasma arc, laser beam and electron beam welding as the processes of choice for welding of critical components. Among various precision welding processes, Plasma Arc welding has gained importance in small and medium scale industries manufacturing bellows , diaphragms etc because of less expensive and easy to operate. This paper reviews the works on Plasma Arc welding and associated phenomena such as Micro Plasma Arc Welding, Variable Polarity Plasma Arc welding and Keyhole Plasma Arc Welding. The review covers works carried out by various researchers on various metals using different modes of plasma arc
Critical review on design of rolling process
No full textRolling is one of the important forming processes used in steel industry.
During rolling process because of overdraft, poor die design and defects
in the rolling die material, breakage of rolls takes place, leading to
shutdown of rolling mill. There is a need for proper deign of rolling dies
based on work piece material. In the present paper an attempt is made to
summarize the various works reported by earlier researchers on certain
specific areas of rolling like Finite Element Analysis (FEA), die and
rolling material and summarize the results , so that the gaps can be
identified, which in turn helps the researchers to carry their research in
rolling
Effect of Pulsed Current Micro Plasma Arc parameters on weld bead geometry of AISI 316Ti Austenitic Stainless Steel
Get PDFMicro Plasma Arc Welding (MPAW) is one of the important arc welding system normally using in sheet metal enterprise for production metal bellows, metallic diaphragms and so forth. Inside the present work Pulsed present day Micro Plasma Arc Welding is used for becoming a member of 0.three mm thick Austenitic stainless-steel sheets of AISI 316 Ti. peak contemporary, Base modern, Pulse rate and Pulse Width are taken into consideration as input parameters and weld bead geometry parameters namely front width, lower back width, front peak, lower back peak are taken into consideration as output responses. Response surface approach (RSM) with box-Benhken design is adopted and for 4 factors and three level, total 27 experiments are completed. Weld bead geometry parameters particularly front width, returned width, the front height and lower back top are measured the use of metallurgical microscope. Empirical mathematical models are evolved using statistical software. Analysis of Variance (ANOVA) is executed at ninety five% self belief degree. Predominant and interplay outcomes are studied. Scatter plots are attracted to apprehend the version of actual and predicted values of weld bead parameters
Finite Element Analysis of Weld Bead Geometry of Micro Plasma Arc Welding Titanium (Ti-6Al-4V) Alloy
Get PDFPrecision welding is a key step in the manufacturing of thin walled metal bellows, diaphragms, sensors etc. and for this; a welding process must reliably maintain tight operational tolerance without interfering with product function. The present work is focused on pulsed current Micro Plasma Arc Welding (MPAW) welding of Titanium (Ti-6Al-4V) metal. Peak current, back current, Pulse rate and Pulse width are chosen as welding parameters, whereas Front width and Back width of the weld bead are considered as output responses. Finite Element Analysis (FEA) is done in ANSYS workbench R15.0 at different peak currents keeping base current, pulse rate and pulse width constant. The values of front width and back width obtained experimentally and FEA are compared and % error is found
Fatigue Analysis of Friction Welded Stringer Panel of an Aircraft Wing
No full textWelding is a wide range multistate perpetual attaching technique for manufacture. Universally welding innovation has various applications. The present venture manages the computation of the weakness life of the grating welded stringer board. The stringer board is a gadget utilized for supporting the upper and the lower skin of the flying machine wing. The equal hassles and life cycles are ascertained hypothetically alluding to numerous diaries, the hypothetical inputs are given to the investigation programming ANSYS Workbench i.e.; heat flux, temperature, and pace of revolution of the contact mix device. The resultant proportionate anxiety and the aggregate disfigurement. Aside from that the life cycles are additionally created. The hypothetical estimations of anxiety and exhaustion life are processed. The best welding conditions are anticipated by appropriate examination in the investigation programming ANSYS Work seat by giving reasonable working conditions as inputs.
Communal diversity of Endophytic fungi among various Medicinal Plants
No full text<p><strong>Abstract:</strong> Medicinal plants have been traditionally utilized by marginalized communities for curing a broad range of health conditions. In traditional medicine, a range of well-being issues are addressed by utilizing different tissues from medicinal plants. . Each tissue of these medicinal plants produces variety of secondary metabolites with pharmacological effects. These tissues also harboures many endophytes that stimulates the growth and secondary metabolite production by the plants. The medicinal plants namely Andrographis paniculata, Abutilon indicum, Ipomea lacunose Aeglemarmelos,Ocimum,Withania sominifera ,Tinospora are some of the important medicinal plants with a variety of applications like anticancer properties, immunomodulatory effects, anti-hepatotoxic qualities, anti-atherosclerotic attributes, anti-hyperglycemic potential, and antioxidative activities, anti-hyperglycemic potential, anti-convulsant activity and larvicidal activities These medicinal plants have demonstrated the existence of promising endophytic strains with potential applications for enhancing crop growth and addressing oxidative stress. This study aims to uncover the diversity of endophytes residing within these medicinal plants</p><p><strong>Keywords:</strong> Endophytic fungi, Medicinal plants, bioactive compounds, Microbial diversity.</p><p><strong>Title:</strong> Communal diversity of Endophytic fungi among various Medicinal Plants</p><p><strong>Author:</strong> Swetha Vallabhaneni, Lakshmi Sharvani K.S, Guru Prasad C, Siva Prasad B.V, Durbaka V R Prasad, Vijaya Lakshmi D</p><p><strong>International Journal of Life Sciences Research</strong></p><p><strong>ISSN 2348-313X (Print), ISSN 2348-3148 (online)</strong></p><p><strong>Vol. 11, Issue 4, October 2023 - December 2023</strong></p><p><strong>Page No: 9-19</strong></p><p><strong>Research Publish Journals</strong></p><p><strong>Website: www.researchpublish.com</strong></p><p><strong>Published Date: 18-November-2023</strong></p><p><strong>DOI: </strong><a href="https://doi.org/10.5281/zenodo.10153311"><strong>https://doi.org/10.5281/zenodo.10153311</strong></a></p><p><strong>Paper Download Link (Source)</strong></p><p><a href="https://www.researchpublish.com/papers/communal-diversity-of-endophytic-fungi-among-various-medicinal-plants"><strong>https://www.researchpublish.com/papers/communal-diversity-of-endophytic-fungi-among-various-medicinal-plants</strong></a></p>
Study on Weld Quality Characteristics of Micro Plasma Arc Welded Austenitic Stainless Steels
No full textAbstractMicro Plasma Arc Welding (MPAW) is one of the important arc welding process commonly using in sheet metal industry for manufacturing metal bellows, metal diaphragms etc. The paper focuses on weld quality characteristics like weld bead geometry, grain size, hardness and ultimate tensile strength of MPAW welded joints of various austenitic stainless steels namely AISI 316L, AISI 316Ti, and AISI 321. From the analysis carried out it is noticed that for the same thickness of work piece material and same welding conditions, AISI 304L has achieved sound weld bead geometry, highest tensile strength and hardness. However it is noticed that AISI 316L has attained lowest tensile strength, AISI 321 has lowest hardness and grain size
Application of Taguchi based Design of Experiments to Fusion Arc Weld Processes: A Review
No full textStochastic analysis of Richards equation under uncertainty in unsaturated soil parameters
No full textIn the present study, stochastic analysis of Richards equation is performed under uncertainty in unsaturated soil parameters. The deviations in means and standard deviations of stochastic and deterministic models are studied considering the saturated hydraulic conductivity and Van Genuchten soil parameter 'n' as random variables. It is shown that the randomness in saturated hydraulic conductivity has a pronounced effect on the deviation in the means of the stochastic and deterministic models whereas the randomness in parameter 'n' has little effect. It is also shown that the cross correlation between the saturated hydraulic conductivity and the parameter 'n' has little effect on the deviations in means of stochastic and deterministic models. However, the cross correlation has significantly reduced the deviations in standard deviation between the stochastic and deterministic models
Stochastic analysis of Richards equation under uncertainty in unsaturated soil parameters
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