Article Per Year (5 Year)
p-Index From 2020 - 2025
0.61
P-Index
This Author published in this journals
All Journal M A T H L I N E : Jurnal Matematika dan Pendidikan Matematika Jurnal Teknologi Berkelanjutan
Cahyo, Bagas Dwi
Unknown Affiliation
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Education Engineering Materials Science & Nanotechnology Mathematics Transportation

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
PEMODELAN SILINDER BETON DENGAN KEKANGAN CFRP (CARBON FIBER REINFORCED POLYMER) Cahyo, Bagas Dwi; Chairunnisa, Nursiah
Jurnal Teknologi Berkelanjutan Vol 9 No 02 (2020): Vol 09 No 02
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (707.052 KB) | DOI: 10.20527/jtb.v9i02.183

Abstract

Confinement plays an important role in preventing cracking and premature shear failure, increasing the compressive strength and increasing the ductility of the element. One of the most efficient retrofitting methods is the reinforcement method with external restraints using high quality materials. Based on previous research, the use of external restraints using high quality materials can be in the form of steel wire mesh and wire rope restraints, and high-quality fiber such as CFRP (carbon fiber reinforced polymer). In this research, a study will be conducted to determine the effect of CFRP confinement reinforcement on a concrete cylinder that will be modeled with finite element software. The dimensions of the concrete cylinder used have a height of 300 mm and a diameter of 150 mm. The concrete cylinder is reinforced with CFRP with a thickness variation of 0.5 mm; 0.7 mm; and 1 mm respectively, namely SC.1.05-F, SC.1.07-F, SC.1.10-F. Then the samples with variations in the number of layers of 1 layer, 2 layers, and 3 layers respectively are SC.1.10-F, SC.2.10-F, SC.3.10-F. The last is the sample with a variety of full wrap installation configurations, CFRP with a width of 30 mm with a spacing of 50 mm, and CFRP with a width of 50 mm with a spacing of 50 mm, respectively, namely SC.1.10-F, SC.1.10-T3, and SC.1.10-T5. From the results of the analysis, it can be concluded that CFRP is able to increase the compressive strength of the sample with each increase in the compressive strength capacity of the test object compared to the Control Cylinder (SK). Based on the results of the analysis for all samples SC.1.10-T3, SC.1.10-T5, SC.1.05-F, SC.1.07-F, SC.1.10-F, SC.2.10-F and SC.3.10-F respectively of 10.79%; 25.24%; 33.66%; 39.50%; 49.85%; 78.21%, and 94.5%.
CHARACTERIZATION OF NORMAL FUZZY SUBGROUP Cahyo, Bagas Dwi; Suroto, Suroto; Maryani, Sri
Mathline : Jurnal Matematika dan Pendidikan Matematika Vol. 10 No. 2 (2025): Mathline : Jurnal Matematika dan Pendidikan Matematika
Publisher : Universitas Wiralodra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31943/mathline.v10i2.791

Abstract

In this article, we discuss the characterization of a normal fuzzy subgroup of classical group . The discussion of this characterization is carried out using Abelian properties, fuzzy conjugate subgroups, fuzzy normalizers, ????-level sets, and fuzzy cosets. The result shows that a sufficient and necessary condition for a normal fuzzy subgroup is the fulfilment of the Abelian condition in the fuzzy subgroup. Then, the equality between of the membership value of all element of  and its conjugate elements is also a sufficient and necessary condition for normal fuzzy subgroup of ????. Moreover, sufficient and necessary conditions of the normal fuzzy subgroup are the normalizer of this fuzzy subgroup is equal to ????. Henceforth, the sufficient and necessary conditions of a normal fuzzy subgroup of  is its ????-level set is a normal subgroup of . Meanwhile, the similarity of the fuzzy right coset and fuzzy left coset of the fuzzy subgroup is also a sufficient and necessary condition for the normal fuzzy subgroup. Furthermore, the normal properties of subgroups on classical groups are a special case of the normal properties in fuzzy subgroups.
Co-Authors Maryani, Sri Nursiah Chairunnisa Suroto Suroto