Analisa Pengaruh Kelembaban dan Temperatur Penyimpanan Terhadap Kualitas Peluru Frangible

Solehah, Urva Sakinatus (2021) Analisa Pengaruh Kelembaban dan Temperatur Penyimpanan Terhadap Kualitas Peluru Frangible. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Permasalahan yang sering terjadi di medan perang yaitu berkurangnya fungsi proyektil akibat kondisi lingkungan yang tidak stabil, sehingga mengurangi sifat fisik dan fungsional dari proyektil tersebut. Berdasarkan masalah tersebut dikalukan penelitian tentang pengaruh temperatur dan kelembaban lingkungan penyimpanan proyektil terhadap kualitas proyektil. Peluru frangible saat ini lebih banyak diminati karena kandungannya yang tidak mengaandung timbal membuatnya lebih ramah lingkungan sehingga banyak diminati. Sehingga pada penelitian ini peluru yang digunakan adalah peluru frangible. Tujuan dari penelitian ini adalah menganalisis pengaruh kelembaban tehadap sifat mekanik, fisik dan morfologi peluru frangible. Serta menganalisis pengaruh temperatur terhadap sifat mekanik, fisik dan morfologi peluru frangible. Proyektil tersebut akan dianalisis dengan studi literatur dan eksperimen. Dalam eksperimen diberikan variabel temperatur <5, 15-25 dan >30oC dan variable kelembaban <50, 50-60 dan >70%. Dari hasil pengujian visual, terdapat perubahan visual akibat proses penyimpanan, antara lain terdapat bercak hijau kebiruan pada permukaan peluru, terdapat bercak coklat dan terjadi perubahan warna abu kehitaman pada beberapa sampel. Pengujian kekerasan menunjukan adanya penurunan nilai kekerasan dibawah standar nilai kekerasan peluru frangible pada sampel yang disimpan pada lingkungan dengan kelembaban dibawah 50%RH dan kenaikan nilai standar kekerasan pada sampel dengan temperatur >30oC dan kelembaban >70% (T3H3). Pengujian karakterisasi menunjukan adanya fasa baru seperti CuO dan unsur S pada sampel setelah proses penyimpanan.

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The problem that often occurs on the battlefield is the reduced function of projectiles due to unstable environmental conditions, thereby reducing the physical and functional properties of the projectiles. Based on this problem, a study was conducted on the effect of temperature and humidity in the storage environment of projectiles on projectile quality. Frangible bullets are currently more in demand because their content which does not contain lead makes them more environmentally friendly so they are in great demand. So that in this study, the bullets used were frangible bullets. The purpose of this study was to analyze the effect of moisture on the mechanical, physical, and morphological properties of the frangible bullets. As well as analyzing the effect of temperature on the mechanical, physical and morphological properties of the projectile frangible bullets will be analyzed with literature studies and experiments. In the experiment, temperature variables <5, 15-25 and> 30oC and humidity variables <50, 50-60 and> 70%. From the results of visual testing, there were visual changes due to the storage process, including bluish-green spots on the surface of the bullets, brown spots, and a blackish gray color change in some samples. The hardness test shows a decrease in the hardness value below the standard hardness value of the frangible bullets in samples stored in an environment with humidity below 50% RH and an increase in the hardness standard values for samples with temperatures> 30oC and humidity> 70% (T3H3). The characterization test shows the presence of new phases such as CuO and S elements in the sample after the storage process.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Quality Control, Projectile, Frangible, Temperature, Humidity, Quality Control, Proyektil, Frangible, Humidity, Temperatur
Subjects:	Q Science > QC Physics > QC173.4.C63 Composite materials T Technology > TS Manufactures > TS156 Quality Control. QFD. Taguchi methods (Quality control)
Divisions:	Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Urva sakina
Date Deposited:	27 Feb 2021 06:54
Last Modified:	27 Feb 2021 06:54
URI:	http://repository.its.ac.id/id/eprint/82960

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