IJE TRANSACTIONS C: Aspects Vol. 27, No. 6 (June 2014) 945-950   

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S. M. Zahraee and A. R. Sabet
( Received: October 03, 2013 – Accepted: December 12, 2013 )

Abstract    Ceramic materials due to their high compressive strength and hardness have been one of prime candidates in armor design in particular when high level threads (impact velocity above 600m/s) are involved. The aim of this work is to investigate ballistic impact resistance potential for a target plate with novel ceramic inserts as against ceramic tiles. Two size 98% alumina (AL2O3) base ceramic inserts with 10mm diameter and 6 and 10mm in length were used in the specimen’s preparation. Also 6 and 10mm thick ceramic tiles were used to compare the ballistic performance. Gas gun was used to carry out high velocity ballistic impact tests in velocity range of 530- 830m/s on both target plates. Results showed outstanding ballistic performance by the target plate with ceramic inserts in term of lower residual velocity for the specimens which experienced perforation and lower damage area compared to totally disintegrated plates containing ceramic tiles. Also specimens containing ceramic inserts showed good ballistic resistance in case of multiple impacts whereas the specimens with ceramic tiles almost totally lost its ballistic potentials. Ability to repair on site (debris removal and new ceramic insert replacement) is among unique advantages of this novel design in the armor application.


Keywords    Ballistic impact, ceramic inserts, damage extension, multiple impacts


چکیده    مواد سرامیکی به دلیل استحکام فشاری و سختی بسیار بالا از گزینه های اصلی در طراحی زره پوشها به خصوص در موارد سطح تهدیدبالا به شمار می روند. هدف از این تحقیق مقایسه ظرفیت بالستیکی اهداف صفحه ای مسلح به هسته های سرامیکی دریک بستر پلی یورتان الاستومر پلیمری با مغزی های سرامیکی یک پارچه در بستر پلیمری مشابه می باشد. هسته های سرامیکی از جنس آلومینای 98% در دو طول 6 و 10 میلی متر در بستر پلیمر و صفحه های سرامیکی یک پارچه با ضخامت مشابه از همان جنس در بستر پلیمری مشابه بعنوان هدف مورد استفاده قرارگرفت.آزمون های ضربه سرعت بالا با استفاده از اسحله گازی تک مرحله ای درمحدوده سرعتی m/s536 الی 830 با پرتابه استوانه ای با قطر 7/8 میلی متر با کلگی نیم کره صورت گرفت. نتایج حاکی از کارایی بالستیکی بسیار بالا در نمونه های مسلح به هسته های سرامیکی در مقایسه با نمونه های مسلح به سرامیک یک پارچه دارد.این کارایی بالا در قالب ناحیه آسیب کم و ظرفیت تحمل آسیب در مقایسه با نمونه حاوی صفحه های سرامیکی و قابلیت تحمل شلیک متعدد خود را نشان داد. قابلیت باسازی در عملیات از ویژگیهای منحصر بفرد در نمونه های حاوی هسته سرامیکی می باشد.



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