Article Per Year (5 Year)
p-Index From 2021 - 2026
0.408
P-Index
This Author published in this journals
All Journal International Journal Science and Technology (IJST)
Kharisma Nur Cahyani
State Polytechnic of Malang
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering

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

Found 2 Documents
Search

 1 
Study of WF Profile Analysis as a Compression Element Reviewed Based on the Weight to Strength Ratio Using the LRFD Method Kharisma Nur Cahyani; Yehezkiel Septian Yoganata; Rif’atul Khusniah; Kartika Purwitasari
International Journal Science and Technology Vol. 4 No. 3 (2025): November: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v4i3.2407

Abstract

This study investigates the efficiency of WF steel profiles as compression members by evaluating the strength-to-weight ratio using the Load and Resistance Factor Design (LRFD) method. The analysis was conducted on seven variations of WF profiles made of ASTM A36M steel (Fy = 250 MPa, Fu = 450 MPa). The primary parameters considered were axial compressive capacity and profile weight, which were used to determine the strength-to-weight ratio as an indicator of material efficiency. This study contributes to existing research by integrating a systematic strength-to-weight–based evaluation to support optimal WF profile selection beyond conventional strength verification. The results indicate that the strength-to-weight ratio ranges from 592.15 to 611.31, with the highest value obtained for profile 300.300.9.14. In contrast, the maximum compressive capacity of 260,599 kg was achieved by profile 300.300.11.17. Overall, WF profiles with 300×300 dimensions demonstrate superior performance compared to 250×250 profiles in terms of both strength and efficiency. The findings suggest that profile selection may be adapted to design priorities, emphasizing either material efficiency or maximum load-carrying capacity.
Internal Force Analysis on Simple Truss Structure: Evaluation of the Cramer’s Rule Method Rif'atul Khusniah; Kharisma Nur Cahyani; Yehezkiel Septian Yoganata
International Journal Science and Technology Vol. 4 No. 3 (2025): November: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v4i3.2408

Abstract

Penelitian ini melakukan analisis gaya internal pada struktur rangka batang sederhana dengan menggunakan metode aturan cramer. Analisis dilakukan melalui pendekatan matematis, di mana model matematis dari struktur rangka batang sederhana disusun dalam bentuk sistem persamaan linear yang didasarkan pada keseimbangan gaya di setiap simpul. Sistem persamaan gaya yang diperoleh kemudian diubah menjadi matriks koefisien dan diselesaikan menggunakan metode aturan cramer untuk menghitung gaya internal pada setiap batang rangka. Selain itu, penelitian ini juga menilai dampak kesalahan numerik dalam proses komputasi. Hasil penelitian mengindikasikan bahwa metode Aturan Cramer efektif untuk struktur kecil, namun sangat peka terhadap kesalahan pembulatan dan koefisien yang mendekati nol, sehingga penggunaan metode numerik sangat penting dalam analisis struktur sipil.
Co-Authors Kartika Purwitasari Rif’atul Khusniah Yehezkiel Septian Yoganata