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Fracture behavior of piezoelectric m...

Park, Seungbae.

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Fracture behavior of piezoelectric materials.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Fracture behavior of piezoelectric materials./
作者:	Park, Seungbae.
面頁冊數:	121 p.
附註:	Source: Dissertation Abstracts International, Volume: 55-12, Section: B, page: 5445.
Contained By:	Dissertation Abstracts International55-12B.
標題:	Engineering, Aerospace. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9513044

Fracture behavior of piezoelectric materials.
Park, Seungbae.

Fracture behavior of piezoelectric materials. - 121 p.

Source: Dissertation Abstracts International, Volume: 55-12, Section: B, page: 5445.

Thesis (Ph.D.)--Purdue University, 1994.

Closed form solutions for all three modes of fracture for an infinite piezoelectric medium containing a center crack subjected to a combined mechanical and electrical loading were obtained. The explicit mechanical and electrical fields near the crack tip were derived from which the strain energy release rate and the total potential energy release rate were obtained by using the crack closure integral. The suitability in using the stress intensity factor, the total energy release rate, and the strain energy release rate as the fracture criterion was discussed.Subjects--Topical Terms:

1018395
Engineering, Aerospace.

Fracture behavior of piezoelectric materials.
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008 130610s1994 eng d
035 $a (UnM)AAI9513044
035 $a AAI9513044
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100 1 $a Park, Seungbae. $3 1916071
245 1 0 $a Fracture behavior of piezoelectric materials.
300 $a 121 p.
500 $a Source: Dissertation Abstracts International, Volume: 55-12, Section: B, page: 5445.
500 $a Major Professor: C. T. Sun.
502 $a Thesis (Ph.D.)--Purdue University, 1994.
520 $a Closed form solutions for all three modes of fracture for an infinite piezoelectric medium containing a center crack subjected to a combined mechanical and electrical loading were obtained. The explicit mechanical and electrical fields near the crack tip were derived from which the strain energy release rate and the total potential energy release rate were obtained by using the crack closure integral. The suitability in using the stress intensity factor, the total energy release rate, and the strain energy release rate as the fracture criterion was discussed.
520 $a Mode I fracture tests were performed on PZT-4 piezoelectric ceramics to verify the validity of the strain energy release rate as a fracture criterion for piezoelectric materials. Experimental results indicated that crack extension could be aided or impeded by the electric field depending on the field direction. The crack closure integral together with the finite element analysis was introduced to calculate the strain energy release rate in different directions from the crack tip. It was found that the crack extension direction coincided with the direction of maximum strain energy release rate.
520 $a As a part of Mode I fracture test, Vickers indentation tests were performed. An attempt was made to relate Vickers indentation test with analytical solutions for a center cracked infinite plate with far field loadings. Unsymmetric three point bending tests were performed to verify the validity of the strain energy release rate for mixed mode fracture. Crack growth trajectory was traced with an assumption that crack growth occurs to the direction of maximum strain energy release rate.
590 $a School code: 0183.
650 4 $a Engineering, Aerospace. $3 1018395
650 4 $a Applied Mechanics. $3 1018410
650 4 $a Engineering, Materials Science. $3 1017759
690 $a 0538
690 $a 0346
690 $a 0794
710 2 0 $a Purdue University. $3 1017663
773 0 $t Dissertation Abstracts International $g 55-12B.
790 1 0 $a Sun, C. T., $e advisor
790 $a 0183
791 $a Ph.D.
792 $a 1994
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9513044