Low-field and high-field characterization of THUNDER actuators

被引:23
作者
Ounaies, Z [1 ]
Mossi, K [1 ]
Smith, R [1 ]
Bernd, J [1 ]
机构
[1] NASA, Langley Res Ctr, ICASE, Hampton, VA 23665 USA
来源
SMART STRUCTURES AND MATERIALS 2001: ACTIVE MATERIALS: BEHAVIOR AND MECHANICS | 2001年 / 4333卷
关键词
piezoelectric; pre-stressed ceramic; hysteresis; temperature effect; isothermal aging;
D O I
10.1117/12.432779
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
THUNDER (Thin Unimorph DrivER) actuators are pre-stressed piezoelectric devices developed at NASA LaRC that exhibit enhanced strain capabilities. As a result, they are of interest in a variety of aerospace applications. Characterization of their performance as a function of electric field, temperature and frequency is needed in order to optimize their operation. Towards that end, a number of THUNDER devices were obtained from FACE International Co. with a stainless steel substrate varying in thickness from 1 mil to 20 mils. The various devices were evaluated to determine low-field and high-field displacement as well as the polarization hysteresis loops. The thermal stability of these drivers was evaluated by two different methods. First, the samples were thermally cycled under electric field by systematically increasing the maximum temperature from 25 degreesC to 200 degreesC while the displacement was being measured. Second, the samples were isothermally aged at 0 degreesC, 50 degreesC, 100 degreesC and 150 degreesC in air, and the isothermal decay of the displacement was measured at room temperature as a function of time.
引用
收藏
页码:399 / 407
页数:9
相关论文
共 8 条
[1]  
DAUSCH DE, 1998, FERROELECTRICS, V210
[2]  
LI G, 1997, J AM CERAMIC SOC, V80
[3]  
MOSSI K, 1998, MAT LETT, V35
[4]  
MOSSI KM, 1999, SPIE P MATH CONTROL, V3667
[5]  
MUKHERJEE BK, 2001, SPIE P ACTIVE MAT BE, V4333
[6]  
PINKERTON JL, 1997, 4767 NASA TM
[7]  
WIEMAN R, 2001, SPIE P MODELING SIGN, V4326
[8]  
WISE SA, 1998, SENSORS ACTUATORS A, V69