Abstract
To better understand the failure characteristics of lead titanate zirconate (PZT) piezoelectric ceramics, in-situ measurements of displacement and crack growth rates were conducted during high cycle fatigue testing, e. g., 5 kHz. A commercial PZT ceramic (used in a buzzer) was employed as the specimen. To examine the failure characteristics, two newly proposed systems were used: (i) a high speed camera system and (ii) a condenser microphone system. The former system consisted of two high speed cameras with an analytical system, which could measure the displacement of the PZT ceramic during the cyclic loading. The maximum displacement value of the ceramic was found to be approximately 20 μm at 0.5 kHz. The three-dimensional shape of the PZT ceramic during cyclic loading could be clearly observed. With the latter system, the displacement intensity arising from the ceramic vibration was detected continuously. It was found that the crack growth rate was not correlated with the fatigue frequency due to the resonance caused by the ceramic oscillation. There is a linear relationship between the crack growth rate and sonar intensity. On the basis of the crack growth behavior, the failure characteristics of the PZT ceramic could be clearly determined.
| Original language | English |
|---|---|
| Pages (from-to) | 1009-1020 |
| Number of pages | 12 |
| Journal | Experimental Mechanics |
| Volume | 52 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Oct 2012 |
| Externally published | Yes |
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Keywords
- Damage characteristics
- Fatigue property
- High speed camera
- PZT ceramic
- Sonar
ASJC Scopus subject areas
- Mechanical Engineering
- Mechanics of Materials
- Aerospace Engineering
Cite this
New Experimental Techniques for In-situ Measurement of the Damage Characteristics of Piezoelectric Ceramics under High Cycle Fatigue Testing. / Okayasu, Mitsuhiro; Sato, Y.
In: Experimental Mechanics, Vol. 52, No. 8, 10.2012, p. 1009-1020.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - New Experimental Techniques for In-situ Measurement of the Damage Characteristics of Piezoelectric Ceramics under High Cycle Fatigue Testing
AU - Okayasu, Mitsuhiro
AU - Sato, Y.
PY - 2012/10
Y1 - 2012/10
N2 - To better understand the failure characteristics of lead titanate zirconate (PZT) piezoelectric ceramics, in-situ measurements of displacement and crack growth rates were conducted during high cycle fatigue testing, e. g., 5 kHz. A commercial PZT ceramic (used in a buzzer) was employed as the specimen. To examine the failure characteristics, two newly proposed systems were used: (i) a high speed camera system and (ii) a condenser microphone system. The former system consisted of two high speed cameras with an analytical system, which could measure the displacement of the PZT ceramic during the cyclic loading. The maximum displacement value of the ceramic was found to be approximately 20 μm at 0.5 kHz. The three-dimensional shape of the PZT ceramic during cyclic loading could be clearly observed. With the latter system, the displacement intensity arising from the ceramic vibration was detected continuously. It was found that the crack growth rate was not correlated with the fatigue frequency due to the resonance caused by the ceramic oscillation. There is a linear relationship between the crack growth rate and sonar intensity. On the basis of the crack growth behavior, the failure characteristics of the PZT ceramic could be clearly determined.
AB - To better understand the failure characteristics of lead titanate zirconate (PZT) piezoelectric ceramics, in-situ measurements of displacement and crack growth rates were conducted during high cycle fatigue testing, e. g., 5 kHz. A commercial PZT ceramic (used in a buzzer) was employed as the specimen. To examine the failure characteristics, two newly proposed systems were used: (i) a high speed camera system and (ii) a condenser microphone system. The former system consisted of two high speed cameras with an analytical system, which could measure the displacement of the PZT ceramic during the cyclic loading. The maximum displacement value of the ceramic was found to be approximately 20 μm at 0.5 kHz. The three-dimensional shape of the PZT ceramic during cyclic loading could be clearly observed. With the latter system, the displacement intensity arising from the ceramic vibration was detected continuously. It was found that the crack growth rate was not correlated with the fatigue frequency due to the resonance caused by the ceramic oscillation. There is a linear relationship between the crack growth rate and sonar intensity. On the basis of the crack growth behavior, the failure characteristics of the PZT ceramic could be clearly determined.
KW - Damage characteristics
KW - Fatigue property
KW - High speed camera
KW - PZT ceramic
KW - Sonar
UR - http://www.scopus.com/inward/record.url?scp=84865706759&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84865706759&partnerID=8YFLogxK
U2 - 10.1007/s11340-011-9550-8
DO - 10.1007/s11340-011-9550-8
M3 - Article
AN - SCOPUS:84865706759
VL - 52
SP - 1009
EP - 1020
JO - Experimental Mechanics
JF - Experimental Mechanics
SN - 0014-4851
IS - 8
ER -