Lifetime Predictions of Actuation Fatigue for Shape Memory Alloy Notched Members

Simple item page
dc.contributorBaxevanis, Theocharis
dc.contributorMavrokefalos, Anastassios
dc.contributorRao, Jagannatha R.
dc.contributor.authorMehta, Rutvik
dc.date.accessioned2019-07-29T19:04:37Z
dc.date.available2019-07-29T19:04:37Z
dc.date.issued2018-12
dc.description.abstractShape Memory Alloy (SMA)-based solid state actuators are an attractive alternative to conventional actuators when a small volume and/or large force and stroke are required. These alloys have the unique characteristic of being able to accommodate large recoverable strains through repeated martensitic-austenitic phase transformation. Insufficient understanding of the SMA "actuation" fatigue properties and lack of theoretical models for accurate prediction of fatigue life are the main limiters for their wider acceptance in engineering applications. The efficiency of the Smith-Watson-Topper model combined with the field intensity approach in estimating fatigue life for loaded notched SMA members undergoing thermal cycling is demonstrated. The field intensity approach adopted, which characterizes damage over a critical region where failure mechanisms are highly active rather than at a single point, is more reasonable from the point of view of fatigue failure mechanisms and more comprehensive from the point of view of explaining fatigue phenomena.
dc.description.departmentMechanical Engineering, Department of
dc.description.departmentHonors College
dc.identifier.urihttps://hdl.handle.net/10657/4270
dc.language.isoen
dc.relation.ispartofSenior Honors Theses
dc.rightsThe author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).
dc.titleLifetime Predictions of Actuation Fatigue for Shape Memory Alloy Notched Members
dc.typeHonors Thesis
dc.type.dcmiText
thesis.degree.collegeCullen College of Engineering
thesis.degree.levelBachelors
thesis.degree.nameBachelor of Science

Files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
Mehta_Rutvik_2018URD.pdf
Size:
2.3 MB
Format:
Adobe Portable Document Format
Download

License bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.76 KB
Format:
Plain Text
Description:
Download

Collections

2018-2019 Senior Honors Theses