Awards Registry

A Laser-Based Device for Work Site Stability Assessment
Profile last edited on: 10/29/2009

Program
SBIR
Agency
NIH | NIOSH
Total Award Amount
$600,000
Award Phase
2
Principal Investigator
Xiaoqing Sun
Activity Indicator

Company Information

AAC International

60 Mechanic Street
Lebanon, NH 03766
   (603) 448-6177
   xqsun@aac-international.net
   N/A
Multiple Locations:   
Congressional District:   02
County:   Grafton

Phase I

Phase I year
2004
Phase I Amount
$100,000
A laser-based acoustic emission (AE) detection device is proposed (Phase I & II) for work site structural stability assessment in order to reduce the occupational injuries and fatalities caused by roof falls, sidewall crumples, stop collapses, slope slides, etc., in the mining industry. This applied research and development addresses the miner's safety and contributes to ensuring the mineworker's right to "safe and healthful working conditions" (Occupational Safety and Health Act of 1970). This new device will take advantage of innovations in laser ultrasonic, artificial intelligence (AI) and conventional acoustic emission technology to provide mine workers with a unique instant, real time stability assessment of immediate rock structures in the working environment, which was not attainable in the past. This research will also result in a unique non-contact monitoring device for acoustic emission/microseismic studies, which will be very useful in many areas of application. The primary objective of the Phase I research is to demonstrate under laboratory conditions the concept of the laser device for stability assessment, and to construct a prototype setup for further development and optimization in the subsequent Phase II research. This primary objective consists of five specific aims: 1. Specimen preparation, 2. Development of laser-based AE monitor, 3. AE data collection and failure criteria development, 4. laboratory demonstration, and 5. final report and Phase II proposal.

Thesaurus Terms:
Laser, Mechanical Stress, Mining, Monitoring Device, Occupational Hazard, Occupational Health /Safety, Technology /Technique Development, Ultrasonography, Work Site Artificial Intelligence, Human Mortality, Injury Prevention, Interferometry, Sound Perception Bioengineering /Biomedical Engineering, Data Collection Methodology /Evaluation

Phase II

Phase II year
2006 (last award dollars: 2007)
Phase II Amount
$500,000
Summary: A laser-based acoustic emission (AE) detection device is proposed for work site structural stability assessment. This new device will take advantage of innovations in laser ultrasonics, artificial intelligence (Al) and advanced acoustic emission technology to provide mine workers with a unique instant, real time stability assessment of immediate rock structures in the working environment, which was not attainable in the past. Nonlinear optical interferometry based on two-wave mixing / photo-induced electromotive force techniques will be used for AE signal detection from rock structures in mine sites. Al criteria will be established by wave pattern recognition to identify unstable areas in mine sites. This research will also result in a unique non-contact monitoring device for acoustic emission/microseismic studies, which will be very useful in many areas of application. The primary objective of the Phase II research is to develop the prototype of the AE detector and test it in real-world mining facilities. The primary objective consists of six specific aims: 1. instrumentation development, 2. pre-field experiment preparation, 3. in-situ data collection, 4. Al criteria development, 5. system integration and in-situ trial, and 6. documentation and reporting. Relevance to Public Health: The innovation will contribute to a reduction the occupational injuries and fatalities caused by roof falls, sidewall crumples, stope collapses, and slope slides, etc., in the mining industry. The research and development addresses the miner's safety and contributes to ensuring the mineworker's right to "safe and healthful working conditions" (Occupational Safety and Health Act of 1970).

Thesaurus Terms:
There Are No Thesaurus Terms On File For This Project.