iosr-JMCE   Volume-19 ~ Issue-1 ~ Jan. – Feb. 2022

Abstract: If for any reason it is not possible to use an automated fire control system, then especially in combat conditions it is necessary to use an alternative method of calculating the mean point of impact position. To do this, tabular firing tables (TFT) are used together with the corresponding type of artillery meteorological message. If TFTs created according to STANAG 4119 are used, only the met message METB3Q must be used for surface-to-surface fire. The calculation of corrections for deviations in virtual temperature is very problematic. We have been dealing with the problem since 2013. In this article, we propose a solution that increases the accuracy of calculations and is applicable in combat conditions. However, the main advantage of the proposed method is the fact that met data can be obtained from any available met message (METB3Q, Meteo - 11 (meteo - average), METCMQ, METGM and GRIB).

Key words: Exterior ballistic; sensitivity analysis; non-standard (perturbed) projectile trajectory; Green's function; weighting factor function; effect function; norm effect; corrections for virtual temperature deviations; FIR filter

[1] STANAG 4635, Ed. 1 The NATO Error Budget Model, 2008
[2] Cech, V. Jedlicka, L. Jevicky, J. Problem of the Reference Height of the Projectile Trajectory as a Reduced Meteo-ballistic Weighting Factor. Defence Technology 10, Number 2 (June 2014), Issue 2: Special issue of the 28th International Symposium on Ballistics, p. 131 - 140
[3] Cech, V. Jedlicka, L. Jevicky, J. Problem of the Reference Height of the Projectile Trajectory as a Reduced Meteo-ballistic Weighting Factor. Extended Abstract. Proceedings of the 28th International Symposium on Ballistics, Editors: Ames, R. G., Boeka, R. D., Atlanta, September 22 - 26, 2014, p. 7 – 10.
[4] Cech, V. Jedlicka, L. Jevicky, J. Some Problems with the Estimation of Projectile Trajectory Perturbations. Proceedings of 20th International Conference Engineering Mechanics 2014, Book of full texts, Editor: Fuis, V., Svratka, May 12 – 15, 2014, p. 116 – 119.
[5] Cech, V. and Jevicky, J. Improved theory of generalized meteo-ballistic weighting factor functions and their use, Defence Technology 12 (June 2016), Issue 3: Special issue of the 29th International Symposium on Ballistics, p. 242 -254

Abstract: Background: MEMS were to begin with proposed within the 1960s, but not commercialized until the 1980s. In 1982, car airbag frameworks (which had been proposed within the 1950s) were presented utilizing MEMS sensors to identify a crash. The Analog Gadgets Organization expounded this thought, creating an "accelerometer" for airbag frameworks in 1991, where the mechanical and electronic parcels were coordinates on the same chip. The accelerometer chip recognizes the sudden increment or diminish in speed that happens amid a crash. Engineers and researchers needed to utilize integrated circuit creation procedures to create minor mechanical frameworks, which may, on the off chance that fundamental, be associated to electronic circuits on the same chip.....

Key words: MEMS; Automotive Industries; Sensor management.

[1]. Fanse, T. S. (2021). Design and Modification of MEMS Based Micro Cantilever. arXiv preprint arXiv:2111.01890.
[2]. Fanse, T. (2021). A Numerical Analysis of a Micro-scale Piezoelectric Cantilever Beam: the Effect of Dimension Parameters on the Eigen Frequency. arXiv preprint arXiv:2109.06060.
[3]. Mursalin, R., Islam, M. W., Moniruzzaman, M., Zaman, M. F., & Abdullah, M. A. (2018, February). Fabrication and Characterization of Natural Fiber Composite Material. In 2018 International Conference on Computer, Communication, Chemical, Material and Electronic Engineering (IC4ME2) (pp. 1-4). IEEE.
[4]. Abdullah, M. A., & Rashedul, M. A. A. (2017, October). Numerical study on enhancement of heat transfer by turbulence. In 2017 Recent Developments in Control, Automation & Power Engineering (RDCAPE) (pp. 100-104). IEEE.
[5]. Abdullah, M. A., Amin, M. R., & Ali, M. (2018, November). A Numerical Analysis of Heat Transfer Enhancement by Turbulence Generated from Swirl Flow by Twisted Tape. In ASME International Mechanical Engineering Congress and Exposition (Vol. 52125, p. V08BT10A033). American Society of Mechanical Engineers.

Abstract: Due to the inelastic behavior intended in most structures subjected to infrequent earthquake loading, the use of nonlinear analyses is essential to capture behavior of structures under seismic effects. This paper presents nonlinear pushover and time-history analysis techniques for performance evaluation of 2D reinforced concrete frames subjected to earthquake loading. The performance of the reinforced concrete frame is evaluated in terms of maximum base shear, maximum displacement, ductility, performance point and sequence of plastic hinge formation. The results from pushover analysis are compared with that obtained from nonlinear time-history analysis.

Key words: Pushover analysis, nonlinear time-history analysis, performance point, plastic hinge

[1]. Ali M. Memari, Shahriar Rafiee, Alireza Y. Motlagh and Andrew Scanlon (2001), "Comparative Evaluation of Seismic Assessment Methodologies Applied to a 32-Story Reinforced Concrete Office Building", Journal of Seismology and Earthquake Engineering, Vol. 3 ,No.1, 31-44.
[2]. Andreas J. Kappos, Alireza Manafpour (2001), "Seismic Design of R/C Buildings with the Aid of Advanced Analytical Techniques", Engineering Structures, 23, 319–332.
[3]. Andreas J. Kappos and Georgios Panagopoulos (2004), "Performance-Based Seismic Design Of 3d R/C Buildings Using Inelastic Static And Dynamic Analysis Procedures" ISET Journal of Earthquake Technology, Paper No. 444, Vol. 41, No. 1, pp. 141 -158
[4]. Andrew Whittaker , Ronald Hamburger , Craig Comartin , Michael Mahoney, Robert Bachman, and Christopher Rojahn Applied Technology Council, Redwood City, CA 94065. https://www.atcouncil.org/pdfs/Whittaker2.pdf
[5]. ATC 40 (1996), "Seismic Evaluation and Retrofit of Concrete Buildings", Applied Technology Council, USA, Vol.1.

Abstract: Efficiency, effectiveness, and irreversibility concepts based on the second law of thermodynamics are applied to analyze the thermal performance of a Straight Microchannel Printed Circuit Heat Exchanger (PCHE). The microchannel is considered a basic counter-flow heat exchanger, where the water flows through the hot channel, and the nanofluid flows through the cold channel. In addition to the efficiency, effectiveness, and irreversibility parameters, the heat transfer rate and the outlet temperatures for both fluids were determined, with variations in the mass flow rate of both fluids. The thermal performance of the compact heat exchanger (PCHE) improves when nanoparticle fractions are included. Aluminum oxide nanoparticles Al2O3 have better thermal performance than titanium oxide nanoparticles TiO2.

Key words: Straight Microchannel; Printed Circuit Heat Exchanger; Nanofluid; Efficiency; Effectiveness.

[1]. B. Zohuri (2017). "Compact Heat Exchanger Types and Application." Chapter 2, Springer International Publishing Switzerland.
DOI 10.1007/978-3-319-29835-1_2
[2]. - Zafar Said and Rahman Saidur (2017). "Thermophysical Properties of Metal Oxides Nanofluids." Chapter 3, Nanofluid Heat and Mass Transfer in Engineering Problems, Intech Open. http://dx.doi.org/10.5772/65610
[3]. - Jang-Won Seo, Yoon-Ho Kim, Dongseon Kim, Young-Don Choi, and Kyu-Jung Lee (2015). "Heat Transfer and Pressure Drop Characteristics in Straight Microchannel of Printed Circuit Heat Exchangers." Entropy 2015, 17, 3438-3457.
DOI:10.3390/e17053438
[4]. Emanuele Zanetti, Marco Azzolin, Stefano Bortolin, Giulio Busato, Davide Del Col (2018). "Design And Testing of a Microchannel Heat Exchanger Working As Condenser And Evaporator." International Refrigeration and Air Conditioning Conference. Paper 2033. https://docs.lib.purdue.edu/iracc/2033
[5]. Salah Almurtaji, Naser Ali, Joao A. Teixeira, Abdulmajid Addali (2020). "On the Role of Nanofluids in Thermal-Hydraulic Performance of Heat Exchangers—A Review." Nanomaterials 2020, 10, 734. DOI:10.3390/nano10040734

Abstract: Nearly 51.8 million hectares of land area in India are covered with expansive soil (mainly black cotton soil). The properties of these expansive soils, in general, are very hard, especially when in dry state. But, they lose all of their strength, when in wet state. In light of this property of expansive soils, these soils pose problems worldwide that serve as a challenge to overcome for the Geotechnical engineers. One of the most important aspects during the construction purposes is soil stabilization. These soil stabilization plays vital role in foundation and road...

Key words: Fly ash; cohesion; expansive soil; plastic clay; volume stability;

[1]. Radhakrishnan, G., Kumar, M.A., and Raju, G.V.R.P., "Swelling Properties of Expansive Soils Treated with Chemicals and Fly ash", American Journal of Engineering Research. Vol. 3, Issue 4, pp. 245-250, 2014.
[2]. Raut, J.M., Bajad, S.P., and Khadeshwar, S.P. , "Stabilization of Expansive Soils Using Fly ash and Murrum", International Journal of Innovative Research in Science, Engineering and Technology. Vol. 3, Issue 7, 2014.
[3]. Satyanarayana P.V.V., Kumar, S.H., Praveen, P., Kumar, B.V.S., "A Study on Strength Characteristics of Expansive Soil-Fly ash Mixes at Various Moulding Water Contents", International Journal of Recent Technology and Engineering. Vol. 2, Issue 5, 2013.
[4]. Senol, A., Etminan. E., and Olgun, C., "Stabilization of Clayey Soils Using Fly Ash and Homopolymerpolypropylene", GeoCongress, pp. 3929-3938, 2012.
[5]. Sridharan, A., Pandian, N. S., and Rajasekhar, C., "Geotechnical Characterization of Pond Ash, Ash ponds and Disposal Systems, Narosa Publising House, New Delhi, India, pp. 97–110, 1996.