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All Journal Metode : Jurnal Teknik Industri CENDEKIA : Jurnal Ilmu Pengetahuan Jurnal Sains dan Aplikasi Keilmuan Teknik Industri Sainteks: Jurnal Sain dan Teknik
Murti, Wilda
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Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Transportation

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Study of Measuring The Cover Factor of Woven Fabrics Using Image Processing Techniques Wijayono, Andrian; Murti, Wilda
Sainteks: Jurnal Sain dan Teknik Vol 6 No 2 (2024): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i02.709

Abstract

In this research, a method for measuring the cover factor of woven fabric using digital image processing techniques has been developed. The cover factor of woven fabric is measured by capturing a digital image of the fabric under examination using a digital microscope, converting the image into digital image information, storing this digital image information in digital memory, and performing digital image segmentation to determine the cover factor of the woven fabric. Cover factor measurements were conducted on seven samples of woven fabric with different densities. To validate the proposed method, the cover factor measurements obtained from image processing were compared with the theoretical cover factor obtained from the standard method. It was found that there was no significant difference between the results obtained from the conventional method and the proposed method (with a significance value of 0.95).
STUDI PERBANDINGAN METODE KAPASITANSI DAN METODE PENGOLAHAN CITRA DIGITAL DALAM PENGUKURAN HAIRINESS PADA BENANG SPUN Murti, Wilda; Pradifta, Reski Alya; Wijayono, Andrian; Nurazizah, Verawati; Rusman, Fahmi Fawzy; Ikhsani, Nurfadilah
CENDEKIA: Jurnal Ilmu Pengetahuan Vol. 5 No. 2 (2025)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/cendekia.v5i2.4703

Abstract

The objective of this study is to determine the relationship between the capacitance method and the digital image processing method in measuring the hairiness index of yarn, as well as to evaluate the potential of digital image processing as an alternative method for testing spun yarn hairiness. This study utilizes three types of yarn with counts of Nec 12, Nec 16, and Nec 24. Hairiness measurement is conducted using two methods: the capacitance method, based on the SNI ISO 16549:2010 standard (Textiles – Yarn Evenness and Similar Properties), utilizing the Textechno Covatest instrument, and the digital image processing method, employing a CMOS Dino-Lite camera and Java-based software. The digital image processing procedure consists of several stages, including yarn image acquisition, background segmentation and free fiber feature extraction, image conversion to binary format, quantitative analysis, and Hairiness index (HI) calculation. The hairiness index results from both methods are compared using linear regression analysis to determine their correlation. The findings indicate that the capacitance method and the digital image processing method exhibit a very strong relationship, with a coefficient of determination (R²) of 90.23%. This result suggests that the digital image processing method has significant potential as an alternative for measuring spun yarn hairiness. ABSTRAKTujuan penelitian ini adalah mengetahui hubungan antara metode kapasitansi dan metode pengolahan citra digital dalam pengukuran hairiness index pada benang serta mengevaluasi kemungkinan metode pengolahan citra digital sebagai alternatif pengujian hairiness benang spun. Pada penelitian ini, digunakan tiga jenis benang dengan nomor Nec 12, Nec 16, dan Nec 24. Pengukuran hairiness  dilakukan dengan dua metode: metode kapasitansi berdasarkan standar SNI ISO 16549:2010 (Tekstil – Ketidakrataan Benang dan Sejenisnya) menggunakan alat Textechno Covatest, serta metode pengolahan citra digital dengan kamera CMOS Dino-Lite dan perangkat lunak berbasis pemrograman Java. Proses pengolahan citra digital dilakukan melalui beberapa tahap, yaitu akuisisi citra benang, segmentasi latar belakang dan ekstraksi fitur serat bebas, konversi citra ke dalam format biner dan analisis kuantitatif dan perhitungan Hairiness index (HI). Hasil hairiness index dari kedua metode dibandingkan dengan analisis regresi linier untuk mengetahui hubungan antara keduanya. Hasil penelitian menunjukkan bahwa metode kapasitansi dan metode pengolahan citra digital memiliki hubungan yang sangat kuat dengan nilai koefisien determinasi (R²) sebesar 90,23%. Nilai ini menunjukkan bahwa metode pengolahan citra digital memiliki potensi sebagai alternatif dalam pengukuran hairiness benang spun.
Pengaruh Jumlah Twist per meter (TPM) dan Rangkapan Benang terhadap Kinerja Mekanis Benang Gintir Nurazizah, Verawati; Wijayono, Andrian; Rusman, Fahmi Fawzy; Ikhsani, Nurfadilah; Pradifta, Reski Alya; Murti, Wilda
Metode : Jurnal Teknik Industri Vol. 11 No. 1 (2025): Jurnal Metode
Publisher : Universitas Muhammadiyah Sorong

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Abstract

Ply yarn is widely used in high-performance textiles due to its superior tensile strength and durability compared to single yarn. However, the selection of twist per meter (TPM) and the number of plies in ply yarn significantly influences its mechanical properties. This study aims to examine the effect of TPM and the number of plies on the tensile strength and elongation of ply yarn. An experimental approach was employed, varying TPM (550, 650, and 750 TPM) and the number of plies (2 and 3). Tensile tests were conducted to measure the yarn's tensile strength and elongation, while two-way ANOVA statistical analysis was used to evaluate the influence of each variable. The results indicated that TPM and the number of plies significantly affected the tensile strength and elongation of ply yarn (p < 0.05), while their interaction was not significant (p > 0.05). Increasing TPM enhanced tensile strength up to a certain limit before declining, whereas a higher number of plies improved both tensile strength and elongation but also increased yarn stiffness. These findings confirm that an optimal combination of TPM and the number of plies is essential to achieve the best balance between tensile strength and flexibility in ply yarn.
Pengaruh Resistansi dan Diameter Kawat Nichrome pada Performa Pemanasan Rompi Berpemanas Elektrik Purwanningrum, Dinarisni; Murti, Wilda; Eddy, Yulius Sarjono; Syahputra , Ibnu
Jurnal Sains dan Aplikasi Keilmuan Teknik Industri (SAKTI) Vol. 5 No. 1 (2025): June 2025
Publisher : Teknik Industri Universitas Ma Chung

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Abstract

Rompi berpemanas elektrik merupakan solusi inovatif untuk meningkatkan kenyamanan termal, khususnya di lingkungan bersuhu rendah. Salah satu elemen utama dalam sistem pemanas ini adalah elemen pemanas berbasis kawat konduktor. Dalam penelitian ini digunakan kawat Nichrome (NiCr) sebagai elemen pemanas dengan memanfaatkan prinsip pemanasan Joule, yaitu menghasilkan panas saat dialiri arus listrik. Penelitian ini bertujuan untuk menganalisis pengaruh resistansi dan diameter kawat nichrome terhadap performa pemanasan rompi, terutama pada laju kenaikan suhu. Eksperimen dilakukan dengan dua variasi diameter kawat (0,2 mm dan 0,3 mm) dan tiga tingkat resistansi (8Ω, 10Ω, dan 12Ω), menggunakan catu daya 5V. Hasil pengujian menunjukkan bahwa semakin kecil nilai resistansi, semakin cepat laju pemanasan yang terjadi, sesuai dengan Hukum Joule. Selain itu, kawat dengan diameter lebih kecil menghasilkan panas yang lebih besar per satuan luas permukaan, sehingga suhu meningkat lebih signifikan. Analisis regresi linear menunjukkan bahwa kombinasi diameter 0,2 mm dengan resistansi 8Ω menghasilkan laju pemanasan tertinggi (slope = 1,0157), sedangkan kombinasi diameter 0,3 mm dengan resistansi 12Ω menunjukkan laju pemanasan terendah (slope = 0,525). Temuan ini menunjukkan bahwa resistansi dan diameter kawat berperan signifikan dalam memengaruhi performa pemanasan rompi elektrik. Diharapkan, hasil penelitian ini dapat memberikan kontribusi dalam memvalidasi penerapan hukum Joule secara praktis pada perancangan rompi berpemanas elektrik.
PENGARUH KECEPATAN DELIVERY ROLL TERHADAP NILAI DENSITAS VOLUME GULUNGAN BENANG RANGKAP PADA PROSES DOUBLING Wijayono, Andrian; Nurazizah, Verawati; Ikhsani, Nurfadilah; Rusman, Fahmi Fawzy; Murti, Wilda; Pradifta, Reski Alya
CENDEKIA: Jurnal Ilmu Pengetahuan Vol. 5 No. 3 (2025)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/cendekia.v5i3.5544

Abstract

Yarn winding is a crucial process in the textile industry where the volume density (density) of the roll is an essential quality parameter. The roll density directly affects the yarn tension in subsequent processes such as warping and twisting. The doubling process, which doubles the yarn before the twisting process, requires proper roll density settings to meet standards. This study aims to analyze the effect of variations in the delivery roll speed on a doubling machine on the volume density of doubled yarn rolls. An experimental method was used by making four samples of Ne1 30 cotton yarn at different delivery roll speeds: 150, 300, 550, and 750 meters/minute. Other parameters such as ring tension load (10 grams) and acceleration time (90 seconds) were kept constant for all samples. The experimental results showed a positive trend, where the higher the delivery roll speed, the higher the resulting roll density value. Of the four speed variations, only speeds of 550 and 750 meters/minute were able to produce roll densities according to the twisting process standard (above 0.4 grams/cm³). Statistical analysis using ANOVA also confirmed that the delivery roll speed has a significant effect on the roll volume density (significance value 0.05). Thus, it is concluded that the delivery roll speed is a key parameter that needs to be optimized to achieve the desired double yarn roll density. ABSTRAKPenggulungan benang merupakan proses krusial dalam industri tekstil di mana densitas volume (kepadatan) gulungan menjadi parameter mutu yang esensial. Kepadatan gulungan secara langsung memengaruhi tegangan benang pada proses selanjutnya seperti warping dan twisting. Proses doubling, yang menggandakan benang sebelum proses twisting, memerlukan pengaturan densitas gulungan yang tepat untuk memenuhi standar. Penelitian ini bertujuan untuk menganalisis pengaruh variasi kecepatan delivery roll pada mesin doubling terhadap densitas volume gulungan benang rangkap. Metode eksperimental digunakan dengan membuat empat sampel benang katun Ne1 30 pada kecepatan delivery roll yang berbeda: 150, 300, 550, dan 750 meter/menit. Parameter lain seperti beban ring tension (10 gram) dan waktu akselerasi (90 detik) dijaga konstan untuk semua sampel. Hasil eksperimen menunjukkan adanya tren positif, di mana semakin tinggi kecepatan delivery roll, semakin besar pula nilai densitas gulungan yang dihasilkan. Dari empat variasi kecepatan, hanya kecepatan 550 dan 750 meter/menit yang mampu menghasilkan densitas gulungan sesuai standar proses twisting (di atas 0,4 gram/cm³). Analisis statistik menggunakan ANAVA juga mengonfirmasi bahwa kecepatan delivery roll memberikan pengaruh yang signifikan terhadap densitas volume gulungan (nilai signifikansi 0,05). Dengan demikian, disimpulkan bahwa kecepatan delivery roll merupakan parameter kunci yang perlu dioptimalkan untuk mencapai densitas gulungan benang rangkap yang diinginkan.
OPTIMASI SUHU PADA PROSES SEAM SEALING UNTUK MENINGKATKAN KINERJA TAHAN AIR PADA JAKET WATERPROOF Murti, Wilda; Hanafi, Andhi Sukma; Noviana, Kamelia Yogi
CENDEKIA: Jurnal Ilmu Pengetahuan Vol. 6 No. 1 (2026)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/cendekia.v6i1.8865

Abstract

The seam sealing process is a crucial stage in the production of waterproof garments, serving to close stitch holes and prevent water penetration. However, the quality of the seam seal highly depends on process parameters such as temperature, pressure, and machine speed. This study investigates the effect of sealing temperature variation on the waterproof performance of seam seals using two different adhesive tapes. Two fabric samples were tested: Sample A (polyurethane–polyester blended tape) and Sample B (pure polyester tape). The tests were conducted following the AATCC 127:2022 standard using a Hydrostatic Pressure Tester with water at 21 ± 2°C and a pressure increase rate of 60 mbar/min; the hydrostatic head value (mmH?O) was recorded when the first three water droplets appeared on the dry side of the fabric. In addition to the supplier’s recommended temperature (480°C), sealing temperatures ranging from 230°C to 500°C were applied to determine the optimal temperature. The results showed that Sample A maintained stable waterproof performance across a wider temperature range (260–470°C), achieving the highest value of 9812.71 mmH?O at 470°C. In contrast, Sample B reached its peak value of 5710.41 mmH?O at 410°C and exhibited greater sensitivity to temperature changes. These findings indicate that the tape composition (presence of polyurethane) and the precise selection of sealing temperature are key factors in achieving optimal waterproof seam quality. Further research is recommended to optimize process parameters (temperature, pressure, and contact time) and to evaluate long-term durability for waterproof garment manufacturing applications. ABSTRAK Proses seam sealing merupakan tahap penting dalam pembuatan pakaian tahan air (waterproof jacket) yang berfungsi menutup celah jahitan agar tidak tembus air. Namun, kualitas hasil seam seal sangat bergantung pada pengaturan parameter proses seperti suhu, tekanan, dan kecepatan mesin. Penelitian ini menelaah pengaruh variasi suhu penyegelan terhadap kekedapan air sambungan jahitan (seam seal) pada dua jenis sampel kain menggunakan pita perekat tape berbeda. Dua sampel yang diuji adalah: Sampel A (tape campuran poliuretan–poliester) dan Sampel B (tape poliester murni). Pengujian dilakukan berdasarkan standar AATCC 127:2022 dengan Hydrostatic Pressure Test pada kondisi air 21 ± 2°C dan laju peningkatan tekanan 60 mbar/menit; nilai hydrostatic head (mmH?O) dicatat ketika muncul tiga tetes pertama pada sisi kering kain. Selain pengujian pada suhu rekomendasi supplier (480°C), dilakukan variasi suhu dari 230°C sampai 500°C untuk menentukan suhu optimal. Hasil menunjukkan bahwa Sampel A mempertahankan kekedapan air yang stabil pada rentang luas (260–470°C) dengan nilai tertinggi 9812,71 mmH?O pada 470°C, sedangkan Sampel B menunjukkan nilai puncak 5710,41 mmH?O pada 410°C dan performa yang lebih sensitif terhadap perubahan suhu. Temuan ini mengindikasikan bahwa komposisi tape (keberadaan poliuretan) dan penentuan suhu penyegelan yang tepat merupakan faktor kunci dalam menghasilkan seam seal yang kedap air. Rekomendasi pengembangan meliputi optimasi parameter proses (suhu, tekanan, waktu kontak) dan uji ketahanan jangka panjang untuk aplikasi manufaktur pakaian tahan air.  
Co-Authors Andhi Sukma Hanafi Eddy, Yulius Sarjono Ikhsani, Nurfadilah Noviana, Kamelia Yogi Nurazizah, Verawati Pradifta, Reski Alya Purwanningrum, Dinarisni Rusman, Fahmi Fawzy Syahputra , Ibnu Wijayono, Andrian