کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8130181 | 1523197 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Core size effect on the dry and saturated ultrasonic pulse velocity of limestone samples
ترجمه فارسی عنوان
اثر اندازه هسته بر سرعت پالس اولتراسونیک خشک و اشباع نمونه های آهکی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
آکوستیک و فرا صوت
چکیده انگلیسی
This study presents the effect of core length on the saturated (UPVsat) and dry (UPVdry) P-wave velocities of four different biomicritic limestone samples, namely light grey (BL-LG), dark grey (BL-DG), reddish (BL-R) and yellow (BL-Y), using core samples having different lengths (25-125Â mm) at a constant diameter (54.7Â mm). The saturated P-wave velocity (UPVsat) of all core samples generally decreased with increasing the sample length. However, the dry P-wave velocity (UPVdry) of samples obtained from BL-LG and BL-Y limestones increased with increasing the sample length. In contrast to the literature, the dry P-wave velocity (UPVdry) values of core samples having a length of 75, 100 and 125Â mm were consistently higher (2.8-46.2%) than those of saturated (UPVsat). Chemical and mineralogical analyses have shown that the P wave velocity is very sensitive to the calcite and clay minerals potentially leading to the weakening/disintegration of rock samples in the presence of water. Severe fluctuations in UPV values were observed to occur between 25 and 75Â mm sample lengths, thereafter, a trend of stabilization was observed. The maximum variation of UPV values between the sample length of 75Â mm and 125Â mm was only 7.3%. Therefore, the threshold core sample length was interpreted as 75Â mm for UPV measurement in biomicritic limestone samples used in this study.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics - Volume 72, December 2016, Pages 143-149
Journal: Ultrasonics - Volume 72, December 2016, Pages 143-149
نویسندگان
Bayram Ercikdi, Kadir Karaman, Ferdi Cihangir, Tekin Yılmaz, Åener AliyazıcıoÄlu, Ayhan Kesimal,