Sensitivity of Polyvinylidene Fluoride Films to Mechanical Vibration Modes and Impact After Optimizing Stretching Conditions
IR@NAL: CSIR-National Aerospace Laboratories, Bangalore
View Archive Info| Field | Value | |
| Title |
Sensitivity of Polyvinylidene Fluoride Films to Mechanical Vibration Modes and Impact After Optimizing Stretching Conditions
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| Creator |
Anjana, Jain
Jayanth Kumar, S Srikanth, S Rathod, VT Mahapatra, D Roy |
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| Subject |
Chemistry and Materials (General)
Composite Materials |
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| Description |
The b-phase of polyvinylidene fluoride (PVDF) is well
known for its piezoelectric properties. PVDF films have
been developed using solvent cast method. The films
thus produced are in a-phase. The a-phase is transformed
to piezoelectric b-phase when the film is hotstretched
with various different stretching factors at various different temperatures. The films are then characterized
in terms of their mechanical properties and surface morphological changes during the transformation from a- to b-phases by using X-ray diffraction, differential scanning calorimeter, Raman spectra, Infrared spectra, tensile testing, and scanning electron microscopy. The films showed increased crystallinity with stretching at temperature up to 808C. The optimum conditions to achieve b-phase have been discussed in detail. The fabricated PVDF sensors have been tested for free vibration and impact on plate structure, and its response is compared with conventional piezoelectric wafer type sensor. The resonant and antiresonant peaks in the frequency response of PVDF sensor match well with that of lead zirconate titanate wafer
sensors. Effective piezoelectric properties and the
variations in the frequency response spectra due to
free vibration and impact loading conditions are reported.
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| Publisher |
Society of Plastics Engineers
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| Date |
2012
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| Type |
Journal Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://nal-ir.nal.res.in/12273/1/ja572.pdf
Anjana, Jain and Jayanth Kumar, S and Srikanth, S and Rathod, VT and Mahapatra, D Roy (2012) Sensitivity of Polyvinylidene Fluoride Films to Mechanical Vibration Modes and Impact After Optimizing Stretching Conditions. Power Engineering and Science, 53 (4). pp. 1-9. |
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| Relation |
http://dx.doi.org/10.1002/pen.23318
http://nal-ir.nal.res.in/12273/ |
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