| Download | - View final version: Crack formation in ice plates by thermal shock (PDF, 2.1 MiB)
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| Author | Search for: Gold, L. W.1 |
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| Affiliation | - National Research Council of Canada
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| Format | Text, Article |
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| Subject | ice; temperature cracks; thermal shocks; axial stresses; internal stress distribution |
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| Abstract | Cracks were formed in the surface of smooth ice blocks by bringing them into contact with a second colder ice block. The temperature change within each block and the associated thermal stress were calculated. The ultimate strength of a smooth ice surface was found to be between 30 and 40 kg/cm[ 2]. The surface temperature shock necessary to produce this stress was about 6 degrees C. There was a marked preference for the cracks to form parallel to the basal and prismatic planes. Maximum depth of crack penetration was obtained with ice blocks made up of only one or two crystals with their C axis perpendicular to the surface. The minimum observed value for the strain energy release rate at crack arrest was calculated to be between 150 and 200 ergs/cm[2] for each cm[2] of new crack surface, indicating that for the crystallographic orientation and stress distribution of those experiments there was relatively little plastic deformation at the crack tip. The associated crack edge stress intensity factor was between 3.0 X 10[6] and 3.5 X 10[ 6] dynes cm[-3/2]. |
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| Publication date | 1963-10-01 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Identifier | DBR-RP-199 |
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| NRC number | NRCC 7548
NRC-IRC-200 |
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| NPARC number | 20375024 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | b022c819-e6d8-4841-91cc-644c97233817 |
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| Record created | 2012-07-23 |
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| Record modified | 2024-01-05 |
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