Detection of Kaiser Effect in Marbles under Brazilian Tests

2010 ◽  
Vol 152-153 ◽  
pp. 37-43
Author(s):  
Qiang Xie ◽  
Carlos Dinis Da Gama ◽  
Yong Xing Zhang
Keyword(s):  
Digital Conversion ◽  
Automatic Data ◽  
Kaiser Effect ◽  
Analog To Digital ◽  
Analog Signals ◽  
Analog To Digital Conversion ◽  
Stress Curve ◽  
Felicity Ratio ◽  
Cumulative Ae Energy ◽  
Automatic Data Acquisition

Kaiser effect was noticed while submitting marble samples to Brazilian tests. An automatic data acquisition system was applied by means of analog to digital conversion, upon recording analog signals of stress, strain and acoustic emission (AE) emitted from Portuguese marble specimens under diametrical loadings in different loading cycles. Results confirm that the Kaiser effect was pronounced and was easy to be detected under Brazilian tests with a felicity ratio varied from 0.92 to 1.09. This means it is possible to measure the pre-existing stresses in rocks under complex states of stress by means of other tests besides uniaxial compression. Results also show that cumulative AE events vs. stress curve is more suitable for Kaiser effect recognition than cumulative AE energy vs. stress curve as every event has different scales of energy.

SELF-TIMED ARCHITECTURE FOR MASKED SUCCESSIVE APPROXIMATION ANALOG-TO-DIGITAL CONVERSION

2007 ◽  
Vol 16 (01) ◽  
pp. 1-14
Author(s):  
TASKIN KOCAK ◽  
GEORGE R. HARRIS ◽  
RONALD F. DEMARA
Keyword(s):  
Successive Approximation ◽  
Cmos Technology ◽  
Digital Systems ◽  
Digital Converter ◽  
Digital Conversion ◽  
Analog To Digital ◽  
Analog Signals ◽  
Analog To Digital Conversion ◽  
Null Convention Logic ◽  
The One

In this paper, a novel architecture for self-timed analog-to-digital conversion is presented and designed using the NULL Convention Logic (NCL) paradigm. This analog-to-digital converter (ADC) employs successive approximation and a one-hot encoded masking technique to digitize analog signals. The architecture scales readily to any given resolution by utilizing the one-hot encoded scheme to permit identical logical components for each bit of resolution. The four-bit configuration of the proposed design has been implemented and assessed via simulation in 0.18-μm CMOS technology. Furthermore, the ADC may be interfaced with either synchronous or four-phase asynchronous digital systems.

Energy Harvesting via Analog-to-Digital Conversion

2021 ◽  
Author(s):  
Neha Jain ◽  
Nir Shlezinger ◽  
Yonina C. Eldar ◽  
Anubha Gupta ◽  
Vivek Ashok Bohara
Keyword(s):  
Energy Harvesting ◽  
Digital Conversion ◽  
Analog To Digital ◽  
Analog To Digital Conversion

Design of a 20-Gsps 12-bit time-interleaved analog-to-digital conversion system

2021 ◽  
Vol 32 (3) ◽  
Author(s):  
Ruo-Shi Dong ◽  
Lei Zhao ◽  
Jia-Jun Qin ◽  
Wen-Tao Zhong ◽  
Yi-Chun Fan ◽  
...  
Keyword(s):  
Digital Conversion ◽  
Analog To Digital ◽  
Analog To Digital Conversion ◽  
Conversion System ◽  
Time Interleaved

scholarly journals How to Control Errors in Analog-To-Digital Conversion

1993 ◽  
Vol 7 (4) ◽  
pp. 408 ◽  
Author(s):  
James R. Matey ◽  
M.J. Lauterbach
Keyword(s):  
Digital Conversion ◽  
Analog To Digital ◽  
Analog To Digital Conversion

1550 nm mode-locked semiconductor lasers for all-optical analog-to-digital conversion

2017 ◽  
Author(s):  
Evgenii S. Kolodeznyi ◽  
Innokenty I. Novikov ◽  
Andrey V. Babichev ◽  
Alexander S. Kurochkin ◽  
Andrey G. Gladyshev ◽  
...  
Keyword(s):  
Semiconductor Lasers ◽  
Digital Conversion ◽  
Analog To Digital ◽  
Analog To Digital Conversion ◽  
All Optical ◽  
Optical Analog

scholarly journals Photonic analog-to-digital conversion based on time-to-frequency mapping

2021 ◽  
pp. 127440
Author(s):  
Hao Chi ◽  
Qiulin Zhang ◽  
Shuna Yang ◽  
Bo Yang ◽  
Yanrong Zhai ◽  
...  
Keyword(s):  
Digital Conversion ◽  
Analog To Digital ◽  
Analog To Digital Conversion
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