iosr-JMCE   Volume-23 ~ Issue-3 ~ May – June 2026

Abstract: The objective of this study is to evaluate the condition of engineering structures throughout their service life, in order to establish a necessary diagnosis for decision-making and to determine appropriate maintenance strategies. The methodology employed involves structural auscultation using non-destructive tests, which provide insight into the key physical degradation phenomena and the current behavior of the structure. Results indicate that the concrete...

Keywords: Condition; Engineering Structure; Auscultation; Non-Destructive

[1]. ACI COMMITTEE 224, (1993, September 01). Causes, Evaluation, And Repair Of Cracks In Concrete Structures.American Concrete Institute: Farmington Hills, MI. Http://Civilwares.Free.Fr/ACI/MCP04/2241r_93.Pdf
[2]. ACI Committee 364, (1994, February 01). Guide For Evaluation Of Concrete Structure Prior To Rehabilitation. ACI Materials Journal, V 90 No 5, 1 R-94, Pp. 479–498. Http://Civilwares.Free.Fr/ACI/MCP04/3641r_94.Pdf
[3]. BREYSSE D., ABRAHAM O., (2005). Methodology For Non-Destructive Evaluation Of The Deterioration State Of Concrete Structures. ISBN 2-85978-405-5. Presses De l’École Nationale Des Ponts Et Chaussées, Paris, France, 555 P. Https://Www.Presses-Des-Ponts.Fr/Notre-Librairie/237-Methodologie-Devaluation-Non-Destructive-De-Letat-Dalteration-Des-Ouvrages-En-Beton.Html
[4]. Brühwiler E., Hajdin R. And Roelfstra G., (2001). Model Of The Evolution Of The Condition Of Reinforced Concrete Road Bridges. Swiss Federal Roads Office, 560, Lausanne, Switzerland, 160 P. Https://Drgr.Ch/Data/Documents/Roelfstra-2310.Pdf
[5]. CETE Méditerranée., (2005). Expertise And Control Of A Civil Engineering Structure. Service Communication Laboratoire-Aix/19 Ed. Https://Www.Ummto.Dz/Dspace/Bitstream/Handle/Ummto/4138/Kaci%2C%20Ouiza.Pdf?Sequence=1&Isallowed=Y

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Abstract: In Practical applications, sound wave propagation seems more complex than the classical theory narrated. The sound waves become interconnected with the surrounding environment; this situation may lead to sound wave attenuation and modulation scattering. The present paper aims for an in-depth review of sound propagation by integrating the advanced computational development with classical theory. An eye focus is keeping on frequency-dependent scattering, acoustic decay patterns in closed spaces, and modulation effects arising from environmental and wave interactions. Further, to have better speculations of acoustic phenomena, the theory related to non-linear wave interaction is also included [1, 7, 14]..

Keywords: Acoustics, Sound propagation, Scattering, Modulation, Nonlinear acoustics, Wave interaction

[1]. J. W. S. Rayleigh, The Theory Of Sound, Dover Publications, 1945.
[2]. J. J. Faran Jr., “Sound Scattering By Solid Cylinders And Spheres,” Jasa, 1951.
[3]. V. Anderson, “Sound Scattering From A Fluid Sphere,” Jasa, 1950.
[4]. V. D. Azzi And B. Celikkol, “Sound Scattering From Bubbles,” Journal Of Sound And Vibration, 1971.
[5]. R. B. Watson, “The Modulation Of Sound Decay Curves,” Jasa, 1946.

Abstract: This study analyzes stress distribution, strain, and displacement in welded joints of a fixed cone roof storage tank using the finite element method (FEM) with SolidWorks 2020. The tank design follows API 650 standards and uses ASTM A283 steel material. The objective is to identify critical stress regions and evaluate the structural safety of the tank under internal pressure loading. A numerical simulation was performed by applying an internal pressure of 0.08387 MPa to the tank model. The results show that the maximum Von Mises stress is 74.73 MPa,.....

Keywords: Stress analysis, welded joint, storage tank, finite element method, Von Mises, SolidWorks

[1]. Aziz, A., Hamid, A., & Hidayat, I. (2014). Perancangan Bejana Tekan (Pressure Vessel) Untuk Separasi 3 Fasa. Sinergi, 18(1), 31–
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[2]. Bednar, H. H. (1981). Pressure Vessel Design Handbook.
[3]. Chandra, H., & Saputra, A. (2016). Analisis Tegangan Pada Bejana Tekan Lpg Kapasitas 3 Kg Dengan Bantuan Software Abaqus
6.14.
[4]. Huda, K., & Permadi, L. C. (2017). Analisis Kekuatan Compresive Natural Gas ( Cng ) Cylinders Menggunakan Metode Elemen
Hingga. Seminar Nasional Inovasi Dan Aplikasi Teknologi, 15.
[5]. Khan, S. M. A. (2010). Stress Distributions In A Horizontal Pressure Vessel And The Saddle Supports. International Journal Of
Pressure Vessels And Piping, 87(5), 239–244. Https://Doi.Org/10.1016/J.Ijpvp.2010.03.005

Abstract: Explaining entrepreneurial success has remained a contentious issue since long. Failures on this anterior have been accredited to extra importance on individual or environment and embarrassment of hypotheses. This research study will explores the relationship between entrepreneurial traits and entrepreneurial success,
emphasizing.....

Keywords: Entrepreneurship, traits, venture, SMEs, MHT, MIT, SAT, SFT, conceptual model

[1]. Kauppinen Dan A. Juho, (2012), “Internationalisation Of Smes From The Perspective Of Social Learning Theory,” J. Int. Entrep.,
Vol. 10, No. 3, Hlm. 200–231, 2012.
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122.
[3]. Acs, Z. J., Audretsch, D. B., Braunerhjelm, P., & Carlsson, B. (2012). How Is Entrepreneurship Good For Economic Growth? Small
Business Economics, 38(2), 325–336.
[4]. American Global Talent. (2024, September 18). What Are The Best Practices For Mentorship In Entrepreneurship? Retrieved From
Https://Americanglobaltalent.Com/
[5]. Ardichvili, A., Cardozo, R., & Ray, S. (2003). A Theory Of Entrepreneurial Opportunity Identification And Development. Journal
Of Business Venturing, 18(1), 105-123.