scholarly journals Analysis of Vibration and Noise on Vibrating Screen at PT. Mifa Bersaudara

2021 ◽  
Vol 6 (2) ◽  
pp. 106-111
Author(s):  
Herdi Susanto ◽  
Kamarullah
Keyword(s):  
Health And Safety ◽  
Sound Level ◽  
Sound Level Meter ◽  
Measurement Point ◽  
Vibration Level ◽  
Vibrating Screen ◽  
Average Value ◽  
Level Meter ◽  
The Right ◽  
Maximum Limit

The purpose of this study was to analyze the level of vibration and noise on the Equipment Vibrating screen crusher FC 02 at PT. MIFA Bersaudara. Vibration is measured using a vibration meter, noise is measured by a digital sound level meter. Measurements are made on the x, y and z axes at each measurement point. The results showed that the value of the vibration level on the Vibrating screen crusher FC 02 on the x-axis with the velocity value of 28.56 mm/s, the y-axis value of 29.82 mm/s and the z-axis velocity value of 25.46 mm/s. While the Acceleration value on the x-axis is 20.7 m/s 2 the value is 30.86 m/s 2on the y and z axes of 21.42 m/s 2 . While the noise value indicates that the average value on the right side is 99.6 dBA on the right side and 101.7 dBA on the left side. Efforts were made to overcome the problem, namely by not operating the VSC FC 02 exceeding the recommended maximum limit of 60 dBA and the maximum allowed which is 70 dBA so as to prevent problems of comfort, health, and safety at work. Operators and employees are advised to stay at the location for no more than 15-30 minutes, if more than that time must use safety earmuffs.

scholarly journals ANALISIS TINGKAT KEBISINGAN LINGKUNGAN DI KELURAHAN PAHANDUT KECAMATAN PAHANDUT KOTA PALANGKA RAYA KALIMANTAN TENGAH

2019 ◽  
Vol 5 (2) ◽  
Author(s):  
Muh Azhari ◽  
Rudy Yoga Lesmana
Keyword(s):  
Noise Level ◽  
Qualitative Method ◽  
Air Transportation ◽  
Sound Level ◽  
Sound Level Meter ◽  
Google Maps ◽  
Average Value ◽  
The Third ◽  
Level Ii ◽  
Level Meter

Permasalahan lingkungan dari usaha kegiatan manusia untuk memenuhi kebutuhan hidup, seperti sandang, pangan, papan dan transportasi harus dilakukan penanganan dengan baik. Misalnya seperti pengaruh kegiatan transportasi udara terhadap kondisi kualitas lingkungan setempat  seperti kegiatan di Bandara Cilik Riwut Kelurahan Pahandut, Kecamatan Pahandut, Kota Palangka Raya Kalimantan Tengah. Metode penelitian yang digunakan merupakan metode kualitatif dengan analisis data instrumen seperti Sound Level Meter Instrument, Anemometer, GPS, Flight Radar, Google Maps Application & WECPNL Instrument (Weighted Equivalent Continuous Perceived Noise Level)  dan pengambilan data dilakukan selama tiga hari sesuai dengan kedatangan dan keberangkatan pesawat. Hasil penelitian dengan analisis WECPNL menunjukkan bahwa tingkat kebisingan di hari ke 2 lebih besar dibandingkan hari ke 3 dan hari ke 3 lebih besar dari hari ke 1 (87,2  > 82,2 > 75,9) dengan nilai rata-rata WECPNL sebesar 81,7. Kebisingan di bandara Cilik Riwut di Kota Palangka Raya Kalimantan Tengah termasuk kebisingan regional tingkat II dan III. Kegiatan yang dapat dilakukan untuk meminimalisir Risiko kebisingan tersebut yaitu dengan melakukan kegiatan rekayasa keteknikan dan menanam vegetasi yang berfungsi mengurangi kebisingan Kata kunci: Bandara, Kebisingan, Lingkungan. The environmental problems of the efforts of human activities to meet the needs of life, such as clothing, food, housing and transportation must be handled properly. For example, such as the influence of air transportation activities on local environmental quality conditions such as activities at Cilik Riwut Airport, Pahandut Village, Pahandut District, Palangka Raya City, Central of Kalimantan. The research method used is a qualitative method with data analysis instruments such as Sound Level Meter Instrument, Anemometer, GPS, Flight Radar, Google Maps Application and WECPNL Instrument (Weighted Equivalent Continuous Percepived Noise) and data collection is carried out for three days in accordance with the arrival and departure of the aircraft. Results of research with  WECPNL analysis show that the noise level on the second day is greater than the third day and the third day is greater than the first day (87,2  > 82,2 > 75,9) with  score average value is 81,7. Noise at Cilik Riwut airport in Palangka Raya City, Central Kalimantan including regional level II and III noise. activities that can be carried out are carrying out engineering activities and planting vegetation which have the function of reducing noise. Keyword: Airport, Environmental, Noice.

Tingkat Kebisingan di Sekolah Sekitar Perlintasan Kereta Api

2017 ◽  
Vol 2 ◽  
pp. 62
Author(s):  
Faradiba Faradiba
Keyword(s):  
School Environment ◽  
Noise Level ◽  
Negative Impact ◽  
Descriptive Analysis ◽  
Data Retrieval ◽  
Sound Level ◽  
Sound Level Meter ◽  
Measurement Point ◽  
Cross Sectional ◽  
Level Meter

<p class="AbstractEnglish"><strong>Abstract:</strong>. Noise is a sound that can cause discomfort. One of them is rail activity. Noise generated enough to bring negative impacts to the surrounding environment, especially in the school environment.. This research uses descriptive analysis method with cross sectional approach. The location of this research is the school that is right next to the railway crossing i.e. SMA Negeri 37 Jakarta. Noise level data retrieval is performed using a sound level meter applications android-based. The data measured by the instantaneous sound pressure level for 5 minutes, or Leq (5 minutes) for each measurement point. There are 5 point measurements. From the results of measurements at SMA Negeri 37 Jakarta gained an average noise level for 5 measurement point is 70.50 dB. The figure exceeds the threshold if refers to the Kep-48 MNLH/11/1996 to 55,00 dB maximum school environment. Necessary noise control efforts at that school to minimise the negative impact caused. Because of the higher the intensity of noise, the more negative impact, especially for students in the school.<strong></strong></p><p class="KeywordsEngish"> </p><p class="AbstrakIndonesia"><strong>Abstrak:</strong> Bising merpukan sebuah bunyi yang dapat menimbulkan ketidaknyamanan. Salah satu yang mengakibatkan timbulnya suara bising yang cukup tinggi adalah aktivitas kereta api. Kebisingan yang dihasilkan cukup membawa dampak negatif bagi lingkungan disekitarnya, khususnya di lingkungan sekolah. penelitian ini menggunakan metode analisis deskriptif dengan pendekatan <em>cross sectional. </em>Lokasi penelitian ini adalah sekolah yang berada tepat di samping perlintasan rel kereta api yaitu SMA Negeri 37 Jakarta.<em> </em>Pengambilan data tingkat kebisingan dilakukan dengan menggunakan aplikasi <em>sound level meter</em><em> </em>berbasis android. Data diukur dengan tingkat tekanan bunyi sesaat selama 5 menit, atau Leq (5 menit) untuk setiap titik pengukuran. Terdapat 5 titik pengukuran. Dari hasil pengukuran pada SMA Negeri 37 Jakarta diperoleh rata-rata tingkat kebisingan untuk 5 titik pengukuran adalah 70,50 dB. Angka tersebut melebihi ambang batas jika merujuk pada Kep-48 MNLH/11/1996 untuk lingkungan sekolah maksimum 55 dB. Diperlukan upaya-upaya pengendalian kebisingan pada sekolah tersebut untuk meminimalisir dampak negatif yang ditimbulkan. Karena semakin tinggi instensitas kebisingan semakin memberikan dampak negatif khususnya bagi siswa di sekolah  tersebut.</p>

scholarly journals Analisa Tingkat Getaran dan Kebisingan Vibrating Screen Crusher FC 02 pada PT Mifa Bersaudara

2021 ◽  
Vol 5 (3) ◽  
pp. 130
Author(s):  
Herdi Susanto ◽  
Dailami Dailami ◽  
Kamarullah Kamarullah
Keyword(s):  
Sound Level ◽  
Sound Level Meter ◽  
Vibrating Screen ◽  
Level Meter

Tujuan dari penelitian ini adalah menganalisa tingkat getaran dan kebisingan pada Equipment Vibrating screen crusher FC 02 pada PT. MIFA Bersaudara. Getaran diukur dengan menggunakan alat vibration meter, kebisingan diukur dengan sound level meter dengan tipe digital. Pengukuran dilakukan pada sumbu x,y dan z pada setiap titik pengukuran. Hasil penelitian menunjukan bahwa nilai tingkat getaran pada vibrating screen crusher FC 02 pada sumbu x dengan nilai velocity 28,56 mm/s, sumbu y nilai 29,82 mm/s dan sumbu z nilai velocity 25,46 mm/s. Sedangkan nilai Acceleration pada sumbu x sebesar 20,7 m/s2 nilai 30,86 m/s2 pada sumbu y dan z sebesar 21,42 m/s2. Sedangkan nilai kebisingan menujukan bahwa nilai rata-rata pada sisi kanan menujukan sebesar 99,6 dBA pada sisi kanan dan pada sisi kiri sebesar 101,7 dBA. Upaya yang dilakukan untuk mengatasi masalah yaitu dengan cara tidak mengoperasikan vibrating screen crusher FC 02 melebihi batas maksimum yang di anjurkan 60 dBA dan maksimum yang diperbolehkan yaitu 70 dBA sehingga dapat mencegah terjadinya permasalahan kenyamanan, kesehatan, dan keselamatan kerja. Operator berserta karyawan disarankan berada dilokasi tersebut tidak lebih dari 15-30 menit, jika lebih dari waktu tersebut harus menggunakan earmuff safety.

scholarly journals The Potency of Waste Paper “Egg Tray” as a Noise-Reduction Material

2015 ◽  
Vol 747 ◽  
pp. 246-249
Author(s):  
Ernaning Setiyowati ◽  
Ihsan Nasrullah
Keyword(s):  
Porous Material ◽  
Urban Areas ◽  
Quantitative Research ◽  
Building Design ◽  
Sound Level ◽  
Sound Level Meter ◽  
Traffic Condition ◽  
Average Value ◽  
Acoustic Quality ◽  
Level Meter

Noise is one of the problems that often occur in urban areas due to the traffic condition. Noise in a building design depends on the choice of materials as sound absorbers. The type of sound dampening material that already exists is a porous material, a resonator, and a panel. The material often used as an absorber is porous materials, because it is relatively cheaper and lighter, especially to reduce the noise in the narrow spaces such as housing and offices. Various substitutes are made from cheap materials, such as the use of recycled materials of egg tray paper with the size of 40 x 40 centimeters. This is a quantitative research that will measure the place of egg tray paper in reducing noise, using a Sound Level Meter. The use of the egg tray paper is able to show an adequate acoustic quality as noise absorbers, with the average value of NR 22-26 dB.

Measurement of Noise inside the Compartment and Vibration on both Sides of Elastomeric Powertrain Mounts of Passenger Car

2013 ◽  
Vol 471 ◽  
pp. 59-63
Author(s):  
Mohd Noor Arib Rejab ◽  
Roslan Abd Rahman ◽  
Raja Ishak Raja Hamzah ◽  
Jawaid Iqbal Inayat Hussain ◽  
Nazirah Ahmad ◽  
...  
Keyword(s):  
Fast Response ◽  
Sound Level ◽  
Measurement Noise ◽  
The Other ◽  
Vibration Level ◽  
Test Conditions ◽  
Exhaust Noise ◽  
Run Up ◽  
Level Meter ◽  
High Level

This paper presents an evaluation on elastomeric mount used to isolate vibration from powertrain to chassis or structure vehicle. The assessments started with measurement of noise inside compartment, and exhaust noise. This is followed by the measurement of vibration on both sides of elastomeric mounts. The noise in the compartment and exhaust noise is measured according to BS 6086: 1981 and BS ISO 5130: 2007. The noise in the compartment and vibration is tested in three conditions. Firstly, engine is run-up with load (driving at second gear); secondly, without load; and thirdly, without load but hanging. A microphone is fixed at the ear of the mannequin. The fast response and A weighting sound level meter were used for measurement noise in the compartment and exhaust noise. The vibration is measured in terms of acceleration on both sides of each elastomeric powertrain mounts. Two accelerometer transducers are fixed on both sides of powertrain elastomeric mounts. One side was identified as a source of vibration and the other as receiver of vibrations. The results showed that the pattern of overall vibration level on source and receiver increased from 1050 RPM (idling) to 4000 RPM on all test conditions. Vibration transmitted to chassis or receiver structure was analyzed using transmissibility concept. By evaluating test condition of engine run-up without load, informed that the front and rear mounts showed a high level transmissibility contributing to structure-borne noise.

Testing of Sonic-Absorbent Panels’ Behavior in Open-Air Environment

2012 ◽  
Author(s):  
Petru A. Pop ◽  
Patricia A. Ungur ◽  
Liviu Lazar ◽  
Mircea Gordan ◽  
Florin M. Marcu
Keyword(s):  
High Frequency ◽  
Noise Pollution ◽  
Sound Level ◽  
Sound Level Meter ◽  
Data Logger ◽  
Public Buildings ◽  
Gypsum Plaster ◽  
Level Meter ◽  
And Control

One wildly used method to reduce and control the noise pollution in green city’s buildings is using sonic-absorbent panels. Their applications can be multiple, such as the insulation of buildings, acoustic barriers and fences along the highway or in front of supermarkets, hospitals and other public buildings. This paper presents a method for testing the behavior of sonic-absorbent panels in open-air environment. The work represents a carrying on of previous research about absorbent materials from gypsum family, tested in lab conditions. The experiment setup used a dynamic installation and as a sample a stand formed by six sonic-absorbent panels from special modeling alpha-gypsum plaster. This installation has been composed of two loudspeakers for emitting the sound at a well-defined frequency by the first laptop, the microphone for detecting and transmitting the signal to the second laptop for analyzing and processing the data. All operations were performed using MATLAB Programs, while a Data Logger Sound Level Meter type CENTER 332 was put on near the microphone to compare both results. The first experiment of acoustic stand has been realized by setting up the installation at a frequency from 50 Hz to 1250 Hz and altering the distance between loudspeakers and stand at 0.5m to 1m and 1.5m, respectively. The second experiment kept the same test’s conditions, while two and three layers of sonic-absorbent panels formed the stand, respectively, but at same distance from source of 0.5 m. In both tests, the results underlined the good sonic-absorbent properties of these panels, especially at medium and high frequency, which can recommend using the panels for multiple outside applications.

Pemetaan Dan Perhitungan Pemaparan Tingkat Kebisingan Pada Industri Pengolahan Kayu Di Kecamatan Siak, Provinsi Riau

2021 ◽  
Vol 6 (2) ◽  
pp. 68-76
Author(s):  
Aryo Sasmita ◽  
Muhammad Reza ◽  
Rodesia Mustika Rozi
Keyword(s):  
Sound Level ◽  
Sound Level Meter ◽  
Noise Mapping ◽  
Level Meter

Dalam kegiatan operasionalnya CV. X yang bergerak pada pengolahan kayu, berpotensi menimbulkan kebisingan yang berasal dari mesin-mesin yang digunakan dalam proses produksi pallet. Kebisingan di perusahaan ini dapat berpengaruh terhadap kesehatan dan kenyamanan pekerja. Penelitian ini bertujuan untuk mengetahui intensitas kebisingan yang dihasilkan oleh mesin produksi, lama waktu pemaparan, pemetaan kebisingan dan upaya pengendalian kebisingan. Metode pengukuran kebisingan mengacu pada metode noise mapping dan alat yang digunakan adalah Sound Level Meter. Data yang diperoleh kemudian diolah menjadi peta kontur dengan variasi warna biru, hijau, kuning, ungu dan merah. Hasil penelitian menunjukkan tingkat kebisingan tertinggi sebesar 99,4 dB dan tingkat kebisingan terendah sebesar 67,3 dB. Berdasarkan hasil perhitungan menggunakan persamaan NIOSH dari 128 titik pengukuran metode noise mapping terdapat 38 titik dengan tingkat kebisingan >85 dB yang menunjukkan waktu pemaparan di atas standar yang sudah direkomendasikan NIOSH. Tingkat kebisingan tertinggi sebesar 99,4 dB dengan lama pemaparan selama 0,3 jam dan tingkat kebisingan terendah sebesar 67,3 dB dengan lama pemaparan selama 475 jam. Upaya pengendalian yang dapat dilakukan untuk mengurangi kebisingan seperti pengendalian dari sumber, jalur transmisi, dan penerima.

A Sound Level Meter featured with automatic estimation of the measurement uncertainty

Measurement ◽  
2021 ◽  
pp. 110409
Author(s):  
Marco Carratù ◽  
Consolatina Liguori ◽  
Vincenzo Paciello ◽  
Antonio Pietrosanto ◽  
Domenico Russo ◽  
...  
Keyword(s):  
Measurement Uncertainty ◽  
Sound Level ◽  
Sound Level Meter ◽  
Automatic Estimation ◽  
Level Meter

scholarly journals PENGEMBANGAN PAPAN PEREDAM BUNYI MELALUI MODIFIKASI NANO SILIKAT AMPAS TEBU PG KREMBOENG DENGAN TEMPLATE SERAT SABUT KELAPA

2019 ◽  
Author(s):  
Hengky Herdianto ◽  
Mochamad Alfi Zahwanul Farich
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Modulus Of Elasticity ◽  
Internal Bond ◽  
Testing Machine ◽  
Sound Level ◽  
Sound Level Meter ◽  
Universal Testing ◽  
Level Meter ◽  
Scanning Electron

Manusia memiliki batas kemampuan mendengar suara pada rentang hingga 140 dB, lebih daripada itu akan terjadi kerusakan pada organ-organ dalam gendang telinga. Ampas tebu PG Kremboeng mengandung 70,97% silikat murni yang berpotensi memberikan penguatan pada papan serat dan meningkatkan performa serap bunyi. Metode yang digunakan untuk sintesis nano silikat ampas tebu dilakukan dengan cara Pretreatment BBA, tukar kation silikat, dan pencucian gel kering. Komponen silikat dan produk lain dalam ampas tebu ditentukan menggunakan difraksi sinar-X (XRD). Morfologi xerogels nano silikat dan papan serat telah diteliti dengan menggunakan Scanning Electron Microscopy (SEM). Daya serap ditentukan dari berat sebelum dan sesudah perendaman dalam air 24 jam. Pengujian keteguhan patah dan Modulus of Elasticity dilakukan dengan Universal Testing Machine. Uji Internal Bond direkatkan pada dua buah blok alumunium dengan perekat besi dan dibiarkan mengering. Koefisien serap diukur dengan sound level meter. Berdasarkan pola XRD, dapat diketahui bahwa terdeteksi medium silicate hydroxide. Berdasarkan mikrograf SEM dapat diketahui suatu struktur bongkahan yang memanjang halus terdiri atas kumpulan-kumpulan partikel nano silikat pada papan dengan template serat sabut kelapa. Sampel terbaik dalam penelitian ini adalah I (60%;17%;23%) dengan nilai DSA 82,38%, MOR 102,84 kg/cm2, MOE 11.228,52 kg/cm2, dan IB 0,83 kg/cm2. Interval nilai koofisien serap taraf intensitas bunyi antar sampel adalah 0,527 &lt; x &lt; 1,000 pada pagi hari, 0,544 &lt; x &lt; 1,000 pada siang hari, dan 0,538 &lt; x &lt; 1,000 pada malam hari. Sehingga secara keseluruhan interval pada segala kondisi waktu adalah 0,527 &lt; x &lt; 1,000.

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