東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

FindBook

Google Book

Amazon

博客來

Laser Shock Processing of Ceramic Materials.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Laser Shock Processing of Ceramic Materials./
作者:	Wang, Fei.
面頁冊數:	1 online resource (234 pages)
附註:	Source: Dissertations Abstracts International, Volume: 81-03, Section: B.
Contained By:	Dissertations Abstracts International81-03B.
標題:	Materials science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13860522click for full text (PQDT)
ISBN:	9781085625012

Laser Shock Processing of Ceramic Materials.
Wang, Fei.

Laser Shock Processing of Ceramic Materials. - 1 online resource (234 pages)

Source: Dissertations Abstracts International, Volume: 81-03, Section: B.

Thesis (Ph.D.)--The University of Nebraska - Lincoln, 2019.

Includes bibliographical references

Laser shock processing (LSP) has been successfully used to introduce beneficial compressive residual stress by plastic deformation to metallic materials to improve their performance since the 1990s. LSP has just recently been applied ceramic materials to improve their mechanical properties. However, technique challenges exist due to the intrinsic brittleness of ceramics at room temperature. In addition, the fundamental mechanism related to the interaction of laser-driven shock waves with ceramic microstructure was poorly understood.In this study, LSP is proposed as a potential approach to improve the crack resistance of ceramics by introducing of compressive residual stress. Room temperature LSP has been applied to polycrystalline alumina and silicon carbide ceramics to investigate the influence of LSP on residual stress distribution, cracking resistance, and microstructure change of the ceramics. Post-annealing has been conducted on the polycrystalline alumina after LSP to heal the microcracks generated during the LSP process. In addition, LSP, at elevated temperatures, of single crystals alumina has been done to study the influence of temperature on the LSP process. Throughout these studies, it has been found that: (1) room temperature LSP can generate compressive residual stress of several hundred mega Pascals on the surface and extend to a depth of 700~1200 um of polycrystalline alumina and silicon; (2) the compressive residual stresses on the surface can improve the resistance of ceramics to indentation cracking; (3) the majority of the surface remains intact after LSP. Localized plastic deformation occurs near the surface and grain boundaries at room temperature; (4) during the post-LSP annealing process, the microcracks could be healed and the surface compressive residual stress was stabilized to ~300 MPa after annealing at 1100 ℃ for 10 hours; (5) a high temperature LSP process could be applied in alumina crystals to generate large compressive surface residual stress, which is beneficial to cracking resistance of the alumina and possibly other ceramics. This research proved that LSP could be a promising toughening method used for different ceramics.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9781085625012Subjects--Topical Terms:

543314
Materials science.
Subjects--Index Terms:

AluminaIndex Terms--Genre/Form:

542853
Electronic books.

Laser Shock Processing of Ceramic Materials.
LDR:03556nmm a2200397K 4500 001 2359913
005 20230925131709.5
006 m o d
007 cr mn ---uuuuu
008 241011s2019 xx obm 000 0 eng d
020 $a 9781085625012
035 $a (MiAaPQ)AAI13860522
035 $a AAI13860522
040 $a MiAaPQ $b eng $c MiAaPQ $d NTU
100 1 $a Wang, Fei. $3 1065413
245 1 0 $a Laser Shock Processing of Ceramic Materials.
264 0 $c 2019
300 $a 1 online resource (234 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertations Abstracts International, Volume: 81-03, Section: B.
500 $a Advisor: Cui, Bai.
502 $a Thesis (Ph.D.)--The University of Nebraska - Lincoln, 2019.
504 $a Includes bibliographical references
520 $a Laser shock processing (LSP) has been successfully used to introduce beneficial compressive residual stress by plastic deformation to metallic materials to improve their performance since the 1990s. LSP has just recently been applied ceramic materials to improve their mechanical properties. However, technique challenges exist due to the intrinsic brittleness of ceramics at room temperature. In addition, the fundamental mechanism related to the interaction of laser-driven shock waves with ceramic microstructure was poorly understood.In this study, LSP is proposed as a potential approach to improve the crack resistance of ceramics by introducing of compressive residual stress. Room temperature LSP has been applied to polycrystalline alumina and silicon carbide ceramics to investigate the influence of LSP on residual stress distribution, cracking resistance, and microstructure change of the ceramics. Post-annealing has been conducted on the polycrystalline alumina after LSP to heal the microcracks generated during the LSP process. In addition, LSP, at elevated temperatures, of single crystals alumina has been done to study the influence of temperature on the LSP process. Throughout these studies, it has been found that: (1) room temperature LSP can generate compressive residual stress of several hundred mega Pascals on the surface and extend to a depth of 700~1200 um of polycrystalline alumina and silicon; (2) the compressive residual stresses on the surface can improve the resistance of ceramics to indentation cracking; (3) the majority of the surface remains intact after LSP. Localized plastic deformation occurs near the surface and grain boundaries at room temperature; (4) during the post-LSP annealing process, the microcracks could be healed and the surface compressive residual stress was stabilized to ~300 MPa after annealing at 1100 ℃ for 10 hours; (5) a high temperature LSP process could be applied in alumina crystals to generate large compressive surface residual stress, which is beneficial to cracking resistance of the alumina and possibly other ceramics. This research proved that LSP could be a promising toughening method used for different ceramics.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2023
538 $a Mode of access: World Wide Web
650 4 $a Materials science. $3 543314
650 4 $a Engineering. $3 586835
653 $a Alumina
653 $a Compressive residual stress
653 $a Laser peening
653 $a Laser shock processing
653 $a Silicon carbide
653 $a Toughness
655 7 $a Electronic books. $2 lcsh $3 542853
690 $a 0794
690 $a 0537
710 2 $a ProQuest Information and Learning Co. $3 783688
710 2 $a The University of Nebraska - Lincoln. $b Materials Engineering. $3 3168974
773 0 $t Dissertations Abstracts International $g 81-03B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13860522 $z click for full text (PQDT)