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توسعه، آزمون آزمایشگاهی و مزرعهای یک حسگر بولینگ برای اندازهگیری تنش در خاک | ||
| مهندسی بیوسیستم ایران | ||
| مقاله 10، دوره 47، شماره 2، شهریور 1395، صفحه 291-300 اصل مقاله (1.02 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijbse.2016.58778 | ||
| نویسندگان | ||
| مجتبی نادری بلداجی* 1؛ علی کاظم زاده1؛ عباس همت2؛ سجاد رستمی1 | ||
| 1دانشگاه شهرکرد | ||
| 2دانشگاه صنعتی اصفهان | ||
| چکیده | ||
| در این مطالعه یک نمونه حسگر بولینگ استوانهای برای اندازهگیری تنش در خاک تحت عبور تایر ساخته و آزمون شد. این حسگر متشکل از یک هد لاستیکی برای حس کردن تنش در خاک، لوله PVC برای انتقال فشار، حسگر دیجیتال فشار و یک سرنگ جهت اعمال فشار داخلی اولیه میباشد. با آزمون آزمایشگاهی حسگر در مخزن تحت فشار هوا در چهار سطح ۲۵، ۵۰، ۷۵ وkPa ۱۰۰ رابطه بین فشار هوای درون مخزن و فشار حسگر بولینگ مورد بررسی قرار گرفت که روابطی کاملاً خطی نشان داد. همچنین در چهار سطح فشار داخلی اولیه، اختلاف فشار حسگر بولینگ و فشار داخلی اولیه با فشار هوای داخل مخزن تناظر یک به یک با حدی (کمتر از 5%) از انحراف را نشان داد. آزمون مزرعهای سه حسگر بولینگ نصب شده در عمقهای 15، 30 وcm 45 تحت عبور تایر تراکتور و کمباین تغییرات تنش با عمق را به خوبی نشان داد. | ||
| کلیدواژه‌ها | ||
| عبور تایر؛ تنش؛ فشردگی خاک؛ حسگر بولینگ | ||
| عنوان مقاله [English] | ||
| Development, Laboratory and Field Testings of a Bolling Probe for Measuring Stress in Soil | ||
| نویسندگان [English] | ||
| Mojtaba Naderi Beldaji1؛ Ali Kazemzadeh1؛ Abbas Hemmat2؛ Sajjad Rostami1 | ||
| چکیده [English] | ||
| In this study, a cylindrical Bolling probe was developed and evaluated for measuring stress in soil under tire traffic. The probe consists of a silicon rubber head for sensing the soil stress, a PVC tube for transferring the liquid pressure, a digital pressure sensor and a syringe for filling the probe with water and adjusting the initial inclusion pressure. A tank with pressurized air was used for laboratory testing of the probe. The probe head was put into the tank and with sealing the slits, the probe was tested at four initial inclusion pressures of 25, 50, 75 and 100 kPa. The relationship between Bolling and air pressures was investigated. The results showed perfectly linear relationships between the air and Bolling pressures at different initial inclusion pressures. The difference between the Bolling pressure and initial inclusion pressure versus air pressure slightly (<5%) deviated from 1:1 line. Field testing of three Bolling probes at 15, 30 and 45 cm depth in wheeling experiments with tractor and combine harvester showed a satisfactory measurement of stress variations with depth. | ||
| کلیدواژه‌ها [English] | ||
| traffic, tire, Stress, Soil compaction, Bolling probe | ||
| مراجع | ||
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