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Mechanoluminescent and Phosphorescent Paint Systems for Automotive and Naval Applications

Krishnan, Srivatsava
http://rave.ohiolink.edu/etdc/view?acc_num=osu1437262259

Abstract Details

2015, Master of Science, Ohio State University, Mechanical Engineering.
Mechanoluminescence (ML) is the emission of light from materials due to mechanical stimulation. Commercially available zinc sulfide phosphors exhibit intense ML during elastic deformations and are a natural fit for applications requiring repeatability and reliability. The motivation for this work is to utilize the intense ML of phosphors and fabricate a ML paint system. The ML paint system is envisioned to be sprayed on to automotive panels that are mechanically actuated to create patterned aesthetic lighting. Towards this goal, commercially available zinc sulfide phosphor crystals are characterized using experimental techniques to understand the dependence of ML on various physical and chemical properties. Composite coupons of the phosphors impregnated in an elastomeric polymer (PDMS) matrix have been fabricated for characterizing the ML phenomenon. The polymer matrix acts as an efficient medium for transferring stress to dispersed phosphor particulates. ML observed during elastic actuation of these coupons was studied to better understand the nature of the phenomenon, i.e. its dependence on strain/stress and rate of strain/stress. Existence of a threshold strain/stress has been established below which no EML is observed. Above threshold, EML was observed to be non-linearly dependent on and in phase with strain rate. Finite element analyses of the stress transfer occurring within the elastomeric matrix at various strains were also performed. A range stresses on the particle at different applied strains have been predicted and the importance of interfacial binding in stress transfer has been established.
Vishnu Baba Sundaresan, Dr. (Advisor)
Ahmet Kahraman, Dr. (Committee Member)
125 p.
Materials Science; Mechanical Engineering
Mechanoluminescence; Phosphorescence; Paintable light source; light emitting paint; stress induced luminescence; aesthetic lighting; automotive lighting; stress-sensing;

Recommended Citations

Citations

  • Krishnan, S. (2015). Mechanoluminescent and Phosphorescent Paint Systems for Automotive and Naval Applications [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1437262259

    APA Style (7th edition)

  • Krishnan, Srivatsava. Mechanoluminescent and Phosphorescent Paint Systems for Automotive and Naval Applications. 2015. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1437262259.

    MLA Style (8th edition)

  • Krishnan, Srivatsava. "Mechanoluminescent and Phosphorescent Paint Systems for Automotive and Naval Applications." Master's thesis, Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1437262259

    Chicago Manual of Style (17th edition)

osu1437262259
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This open access ETD is published by The Ohio State University and OhioLINK.