Blast diagnostic tools and techniques: a review

Desanti, Young Wayne

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https://hdl.handle.net/2142/97456 Copy

Description

Title

Blast diagnostic tools and techniques: a review

Author(s)

Desanti, Young Wayne

Issue Date

2017-04-25

Director of Research (if dissertation) or Advisor (if thesis)

Glumac, Nick G.

Department of Study

Mechanical Sci & Engineering

Discipline

Mechanical Engineering

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

M.S.

Degree Level

Thesis

Keyword(s)

• Explosives
• Energetic materials
• Pressure transducer
• Optic diagnostics
• Piezoelectric
• Piezoresistive
• Manganin

Abstract

Pressure measurements are essential in determining the energy output from shock waves generated by high explosives. Thus, it is imperative to choose appropriate sensors and measurement techniques to consistently acquire useful data. Past studies conducted in diagnostics of energetic materials were focused on the energy release and the material properties, but very few, if any, placed an emphasis on the actual diagnostic tools and techniques. There are two main types of pressure transducers utilized in the industry today: piezoresistive and piezoelectric. Piezoresistive sensors experience a change in internal resistance when the sensing material is subjected to mechanical strain, while piezoelectric sensors generate an electric charge when placed under a similar condition. In addition to the two industry standards the Manganin pressure sensor also plays an important role in blast diagnostics. This type of sensor represents a niche part of the pressure transducer market and are primarily used to capture the detonation pressure for high explosives. In this study, appropriate measurement techniques, in addition to the tools utilized, were examined to achieve seamless data collection. Electric noise reduction and data loss prevention techniques were explored in this study. Some of these techniques include: adding feed-through terminator to reduce signal output, creating protective barriers surrounding signal cables, and reducing amplifier-to-gauge cable length. Through preparation and application of appropriate techniques, valuable data can be adequately acquired on a consistent basis with minimal disturbances.

Graduation Semester

2017-05

Type of Resource

text

Permalink

http://hdl.handle.net/2142/97456

Copyright and License Information

Copyright 2017 Young Desanti

Owning Collections