Pada dasarnya kain tenun terdiri atas struktur anyaman benang-benang yang terbuat dari bahan serat tekstil melalui suatu proses pertenunan. Salah satu jenis serat yang telah lama dikenal ...sebagai bahan baku pembuatan kain tenun adalah serat kapas. Terdapat tujuh jenis konstruksi kerapatan benang kain tenun kapas 100% yang telah digunakan sebagai material dielektrik pada penelitian ini. Pada penelitian ini telah dilakukan pengamatan mengenai pengaruh konstruksi kerapatan benang kain tenun kapas 100% (kain kanvas) terhadap konstanta dielektrik dan profil tegangan pengisian & pengosongan pada perangkat kapasitor plat sejajar. Pengamatan konstanta dielektrik dan perilaku tegangan perangkat kapasitor plat sejajar berdielektrik kain tenun kapas 100% saat proses pengisian & pengosongan telah dilakukan dengan menggunakan perangkat mikrokontroler Arduino Uno. Proses pengisian & pengosongan kapasitor telah dilakukan dengan menggunakan skema rangkaian seri resistor-kapasitor (RC). Hasil pengamatan menunjukkan kesesuaian cukup baik antara hasil prediksi dan eksperimen pada perilaku profil tegangan kapasitor plat sejajar berdielektrik kain tenun kapas 100% saat proses pengisian & pengosongan dengan nilai R2 > 0,9. Telah ditemukan hubungan antara parameter kerapatan benang kain tenun kapas 100% terhadap konstanta dielektrik dan profil tegangan pengisian & pengosongan perangkat kapasitor plat sejajar. Hasil menunjukan bahwa semakin besar nilai kerapatan benang kain tenun kapas 100%, maka semakin besar nilai konstanta dielektrik kain tersebut. Woven fabric consists of interlacing threads made from fiber material by weaving process. One type of fibers which is known as raw material for making woven fabric is cotton fiber. In this research, there are seven types of yarn-fabric density of 100% cotton fabric that has been used as dielectric materials. In this study, the influence of woven dielectric yarn density on the dielectric properties and the voltage charging & discharging profiles of the parallel plate capacitor devices has been carried out. The observation of the dielectric properties and the voltage in the parallel plate capacitor devices during the charging and discharging process are carried out using an Arduino Uno microcontroller device. The charging and discharging profiles are measured by using a series of resistor-capacitor (RC) circuit. The results of the charging process and the discharging process obtained R2 > 0.9, which indicates that the correlation between the predicted and experimental results has a very good relationship. It has been found that the correlation between the woven dielectric yarn density on the dielectric constant and the charge-discharge profiles of the parallel plate capacitor. It also has been found that the higher density of the 100% cotton fabric, the higher the dielectric constant value of the fabric.
Pada bidang tekstil, perhitungan nomor benang, Nm, daapt dijabarkan dengan mengetahui besar puntiran (twist) pada benang. Pada penelitian ini pemodelan secara teori untuk menghubungkan antara besar ...puntiran dan juga nomor benang, baik pada mesin pintal rotor dan juga mesin pintal ring sudah didapatkan dan dikembangkan untuk mendapatkan sebuah pemodelan yang baik dan dapat memperlihatkan besar nilai puntiran nyata benang. pada penelitiann ini rumusan hasil studi sudah divalidasi yang digunakan untuk memperlihatkan hubungan antara nomor benang dan puntiran secara lebih umum menggunakan pendekatan teori. Pada penelitian ini juga telah dirancang suatu alat untuk menghitung puntiran nyata tersebutKata kunci: puntiran nyata ,tekstil ,nomor benang In textile, calculation the yarn count, Nm, can be derived by knowing the twist of yarn. Theoretical consideration for a modeling the relationship of twist and the yarn count, both in rotor spinning and ring spinning, has been done and developed to get a good model to show the actual twist. In this research, the formula has been verified and it has been investigated to show the relationship of twist with yarn count completely by theoretical approach and also it has done fabrication the actual twist measurement tool. Keywords: actual twist, textile, yarn count
The textile industry is currently moving towards to the fourth Industrial Technological Revolution. One of the applications of the industrial revolution 4.0 is in the field of computational physics. ...The application of applied physics especially computational physics on textile science can be initiated in analyzing the quality of fabric in the textile coloring process. This research focuses on a technique measuring the quality of fabric that occurred in the coloring process using the image processing technique by measuring the color space in the RGB (Red, Green, Blue) space as the length of colors vector of the fabric. In this study, the technique has been made using MATLAB 2009a software and Logitech C525 HD webcam. The result of this research shows that computational physics especially image processing by MATLAB can be implemented to measure and to determine the color quality of fabric accurately by comparing with the samples.
The application of theoretical physics can be found in textile processing such as yarn manufacturing process. The aim of this research is to determine and to develop a new model to predict the yarn ...strength of ring spun yarn influenced by the yarn count number (in unit m/g) as well as the delivery speed of yarn in bobbin (vf). In this research we have found a new model to predict the yarn strength on ring spinning machine based on classical mechanics as well as statistical method using nonlinear multivariate regression .According to this research, we have established that both classical mechanics and nonlinear multivariate regression can be applied and developed to predict yarn strength as a function of yarn delivery speed and yarn count number both theoretically and experimentally.
Pada bidang tekstil, perhitungan nomor benang, Nm, daapt dijabarkan dengan mengetahui besar puntiran (twist) pada benang. Pada penelitian ini pemodelan secara teori untuk menghubungkan antara besar ...puntiran dan juga nomor benang, baik pada mesin pintal rotor dan juga mesin pintal ring sudah didapatkan dan dikembangkan untuk mendapatkan sebuah pemodelan yang baik dan dapat memperlihatkan besar nilai puntiran nyata benang. pada penelitiann ini rumusan hasil studi sudah divalidasi yang digunakan untuk memperlihatkan hubungan antara nomor benang dan puntiran secara lebih umum menggunakan pendekatan teori. Pada penelitian ini juga telah dirancang suatu alat untuk menghitung puntiran nyata tersebut Kata kunci: puntiran nyata ,tekstil ,nomor benang In textile, calculation the yarn count, Nm, can be derived by knowing the twist of yarn. Theoretical consideration for a modeling the relationship of twist and the yarn count, both in rotor spinning and ring spinning, has been done and developed to get a good model to show the actual twist. In this research, the formula has been verified and it has been investigated to show the relationship of twist with yarn count completely by theoretical approach and also it has done fabrication the actual twist measurement tool. Keywords: actual twist, textile, yarn count
Woven fabric in Indonesia is generally known as a material for making clothes and it has been applied as an interior finishing material in buildings, such as sound absorbent material. This study ...presents a new method for predicting the sound absorption of woven fabrics using a modification of the wave equations and using genetic algorithms. The main aim of this research is to study the sound absorption properties of woven fabric by modeling using a modification of the sound wave equations and using genetic algorithms. A new model for predicting the sound absorption coefficient of woven fabric (plain, twill 2/1, rips and satin fabric) as a function of porosity, the weight of the fabric, the thickness of the fabric, and frequency of the sound wave, was determined in this paper. In this research, the sound absorption coefficient equation was obtained using the modification of the sound wave equation as well as using genetic algorithms. This new model included the influence of the sound absorption coefficient phenomenon caused by porosity, the weight of the fabric, the thickness of fabric as well as the frequency of the sound wave. In this study, experimental data showed a good agreement with the model
Pada penelitian ini telah dilakukan penentuan konstanta permitivitas dielektrik bahan kain non woven secara eksperimen dengan menggunakan kapasitansi meter berbasis Arduino Uno dan prinsip kerja ...kapasitor plat sejajar. Penentuan konstanta permitivitas bahan kain non woven dilakukan dengan cara mengukur nilai kapasitansi yang divariasikan terhadap jarak antara plat yang berisi bahan dielektrik kain non woven. Pengukuran kapasitansi dilakukan dengan prinsip pengisian dan pengosongan kapasitor menggunakan perangkat mikrokontroler Arduino Uno. Proses pengisian dan pengosongan dilakukan dengan menggunakan susunan seri rangkaian resistor-kapasitor (RC) dengan tegangan sumber 5 Volt. Pada eksperimen ini telah digunakan sebuah plat sejajar dengan ukuran 29 × 30 cm sebagai elektroda kapasitor, serta sebuah perangkat resistor dengan ukuran 125 megaOhm. Hasil penelitian menunjukan bahwa perilaku pengisian dan pengosongan perangkat kapasitor plat-sejajar memiliki nilai R square > 0,9, yang menunjukan korelasi cukup baik antara hasil prediksi dan eksperimen pada pengukuran kapasitansi. Terdapat lima bahan dielektrik kain yang ditentukan dengan hasil dari yang terkecil sampai yang terbesar berturut-turut yaitu kain non woven polipropilen 31,44 gsm sebesar 1,0598, kain non woven polipropilen 43,72 gsm sebesar 1,0996, kain non woven polipropilen 52,31 gsm sebesar 1,1288, kain non woven polipropilen 74,12 gsm sebesar 1,1963, kain non woven polipropilen 80,87 gsm sebesar 1,2279. Telah ditemukan hubungan antara parameter gramasi (GSM) kain non woven polipropilen terhadap besaran nilai konstanta dielektrik terukur.
Stitch per inch is defined as the one of many quality parameters which evaluated in the garment industry. The strength of the stitch will be determined by stitch per inch, both on the clothes and ...fabrics. Conventionally, stitch per inch determined by using a traditionaly visual method. Many researchers have been developed the image processing technology which applied into various textile fields. In this reserach, it has been developed a new method and a new software which could determine stitch per inch on fabrics using the image processing techniques. Stitch per inch measurement has been done using the box counting method (pixel) on image processing software. Stitch per inch in several fabrics (with different color and structures) has been measured, which shows that the value of the each methods are equal
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