مهندسی مکانیک مدرس

مهندسی مکانیک مدرس

ارزیابی تجربی اثر هسته فومی آلیاژ آلومینیوم بر رفتار مکانیکی ساندویچ پانل

نوع مقاله : پژوهشی اصیل

نویسندگان
عبدالله آقانصیری
حمیدرضا رضایی آشتیانی
دانشگاه صنعتی اراک
10.22034/mme.23.6.379
چکیده
از موارد حائز اهمیت در رفتار مکانیکی ساندویچ پنل­ها نوع و جنس قطعه هسته می­باشد. در مطالعه حاضر رفتار مکانیکی ساندویچ پنل با دو نوع هسته فوم آلیاژ آلومینیوم مورد بررسی قرار گرفت. همچنین به منظور بررسی و مقایسه میزان تاثیر روش به کار رفته جهت تثبیت فوم­های آلومینیومی درخواص خمشی و فشاری هسته ساندویچ ­پنل­ها، فوم آلومینیوم آلیاژی LM13 با تثبیت کننده کلسیم و پودر کاربید سیلیسیم به صورت جداگانه تولید شد. نتایج آزمایش پراش پرتو اشعه ایکس نشان دهنده حضور ترکیبات بین­فلزی Al4Ca در فوم­های آلومینیومی حاوی فلز کلسیم، و ذرات کاربید سیلیسیم برای فوم­های آلومینیومی حاوی پودر سیلیکون­کارباید در دیواره سلولی بود. میزان استحکام تسلیم در ساندویچ پنل هایی با هسته فوم آلومینیوم و تثبیت­کننده فلز­کلسیم از هسته هایی با تثبیت کننده ذرات کاربید سیلیسیم بالاتر بود. همچنین ساندویچ­هایی با هسته فوم آلومینیوم حاوی پودر کاربید سیلیسیم قابلیت جذب انرژی بیشتری از خود نشان دادند. در مقابل فوم هایی با تثبیت کننده پودر کاربید سیلیسیم انرژی بیشتری را تحت آزمایش فشار تک محوری جذب نمودند. همچنین نتایج بررسی ماکروساختار از نحوه تغییر شکل ساندویچ پنل در آزمایش خمش سه نقطه گویای کاهش نیرو در اثر ضعف در اتصال بین پوسته ساندویچ پنل و هسته فوم آلومینیومی بود.
کلیدواژه‌ها
ساندویچ پنل
هسته فوم آلومینیوم
کلسیم
کاربید سیلیسیم
استحکام خمشی

موضوعات

عنوان مقاله English

Experimental evaluation of the effect of aluminum alloy foam core on the mechanical behavior of sandwich panel

نویسندگان English

Abdollah Aghanasiri
Hamidreza Rezaei Ashtiani
Arak university of technology
چکیده English

The type and material of the core piece of sandwich panels are important parameters in the mechanical behavior of these sandwich samples. In this study, the mechanical behavior of sandwich panels with two types of aluminum alloy foam core was investigated. Also, the effect of the method used to stabilize aluminum foam investigates and compares during the bending and compressive tests, for this purpose, the properties of the core of sandwich panels made with LM13 alloy aluminum foam were fabricated with calcium stabilizer and silicon carbide powder separately. The results of the X-ray diffraction test showed the presence of Al4Ca intermetallic compounds in aluminum foams containing calcium metal, and silicon carbide particles for aluminum foams containing silicon carbide powder in the cell wall. The yield strength of sandwich panels with aluminum foam core and calcium metal stabilizer was higher than that of cores with silicon carbide particle stabilizer. Also, sandwich panels with aluminum foam cores containing silicon carbide powder showed more energy absorption. In contrast, foams with silicon carbide powder stabilizer absorbed more energy under the uniaxial pressure test. Also, the results of the macrostructure analysis of how the shape of the sandwich panel changed in the three-point bending test were indicative of a reduction in force due to the weakness in the connection between the sandwich panel shell and the aluminum foam core.

کلیدواژه‌ها English

Sandwich panel
Aluminum alloy foam core
Calcium
Silicon carbide
Bending strength
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مهندسی مکانیک مدرس
دوره 23، شماره 6
خرداد 1402
صفحه 379-386