Call number:
ZSP-201-83/23
In:
CRREL Report, 83-23
Description / Table of Contents:
The problems associated with measuring stresses in ice are reviewed. Theory and laboratory test results are then presented for a stiff cylindrical sensor made of steel that is designed to measure ice stresses in a biaxial stress field. Loading tests on freshwater and saline ice blocks containing the biaxial ice stress sensor indicate that the sensor has a resolution of 20 kPa and an accuracy of better than 15% under a variety of uniaxial and biaxial loading conditions. Principal stress directions can also be determined within 5 degrees. The biaxial ice stress sensor is not significantly affected by variations in the ice elastic modulus, ice creep or differential thermal expansion between the ice and gauge. The sensor also has a low temperature sensitivity (5 kPa/deg C).
Type of Medium:
Series available for loan
Pages:
38 Seiten
,
Illustrationen
Series Statement:
CRREL Report 83-23
URL:
https://apps.dtic.mil/docs/citations/ADA133906
URL:
https://hdl.handle.net/11681/9296
Language:
English
Note:
CONTENTS
Abstract
Preface
Introduction
Previous work
Stress measurements
Design considerations
Stress sensors
Biaxial ice stress sensor
Biaxial stress sensor theory
Gauge deformation
Stresses associated with cylindrical sensors
Determination of ice stresses
Gauge calibration
Evaluation of the biaxial ice stress sensor
Temperature sensitivity
Biaxial loading test equipment
Biaxial loading test results
Differential thermal expansion
Long-term drift
Discussion of test results
Conclusions
Literature cited
Location:
AWI Archive
Branch Library:
AWI Library
