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Thin Piezo Actuator/ Piezo Sensor: Macro Fiber Composite

*This product is produced by Smart Material GmbH

Benefits and features

  • Flexible, durable and reliable
  • Increased strain actuator efficiency
  • Directional actuation and sensing
  • Damage-tolerant
  • Available as elongator (d33 mode) and contractor (d31 mode)
  • Conforms to surfaces
  • Readily embeddable
  • Environmentally sealed package
  • Demonstrated performance
  • Different piezo ceramic materials available
  • Available also in single crystal PMN-PT, PZN-PT

The Macro Fiber Composite (MFC) is the leading low-profile actuator and sensor offering high performance, flexibility and reliability in a cost- competitive device. The MFC was invented by NASA in 1999. In 2002, Smart Material started commercializing this patented invention worldwide as its licensed manufacturer and distributor. Since then, the MFC has been continuously improved and customized to fit customers’ specific needs and to meet the requirements for new applications.

The MFC consists of rectangular piezo ceramic rods sandwiched between layers of adhesive, electrodes, and polyimide film. The electrodes are attached to the film in an interdigitated pattern which transfers the applied voltage directly to and from the ribbon-shaped rods. This assembly enables in-plane poling, actuation, and sensing in a sealed and durable, ready-to-use package. The MFC can also be applied (normally bonded) as a thin, surface-conformable sheet to various types of structures, or embedded in a composite structure. If voltage is applied, it will bend or distort materials, counteract vibrations, or generate vibrations. If no voltage is applied it can work as a very sensitive strain gauge, sensing deformations, noise, and vibrations. The MFC is also an excellent device to harvest energy from vibrations.

MFC P1 type (d33 effect), Elongator

The P1 type MFCs, including the F1 and S1 types, utilize the d33 effect for actuation and will elongate up to 1800ppm if operated at the maximum voltage rate of -500V to +1500V. The P1 type MFCs are also very sensitive strain sensors.

MFC P1, F1 and S1 types (d33 effect), Elongator

MFC F1 types, 45° fiber orientation
-500 to 1500V operating voltage

Model active length
in mm
active width
in mm
overall length
in mm
overall width
in mm
Capacitance
in nF
±20%
free strain
in ppm
±10%
blocking force
in N
±10%
M2503-P1 25 3 46 10 0.34 788 21
M2807-P1 28 7 38 13 0.93 1035 62
M2814-P1 28 14 38 20 1.40 1160 146
M4005-P1 40 5 50 11 0.70 885 38
M4010-P1 40 10 50 16 1.87 1050 90
M4312-P1 43 12 60 21 3.49 1125 120
M5628-P1 56 28 67 37 8.71 1350 340
M8503-P1 85 3 110 14 1.10 788 21
M8507-P1 85 7 101 13 1.76 1035 65
M8514-P1 85 14 101 20 5.81 1200 152
M8528-P1 85 28 103 35 11.31 1350 454
M8557-P1 85 57 103 64 16.00 1350 693
M14003-P1 140 3 160 10 2.51 1050 28

MFC Special types, S1

MFC Special types, S1
-500 to 1500V operating voltage

Model active length
in mm
active width
in mm
overall length
in mm
overall width
in mm
Capacitance
in nF
±20%
free strain
in ppm
±10%
blocking force
in N
±10%
M8557-S1 Actuator
with co-located Sensor
85
85
47
5
105 64 13.00
1.45
1350 570 calc.

MFC F1 types, 45°fiber orientation

MFC F1 types, 45° fiber orientation
-500 to 1500V operating voltage

Model active length
in mm
active width
in mm
overall length
in mm
overall width
in mm
Capacitance
in nF
±20%
free strain
in ppm
±10%
blocking force
in N
±10%
M8528-F1 85 28 105 35 11.00 1350 364 calc.
M8557-F1 85 57 105 64 16.00 1350 710 calc.

MFC P2 type and P3 type (d31 effect), Contractor

The P2 and P3 type MFCs utilize the d31 effect for actuation and will contract up to 750ppm if operated at the maximum voltage rate of -60V to +360V. The P2 and P3 type MFCs are mostly used for energy harvesting and as strain sensors.

 


P2 and P3 type standard inventory sizes

MFC P2 types, anisotropic
-60 to 360 operating voltage

Model active length
in mm
active width
in mm
overall length
in mm
overall width
in mm
Capacitance
in nF
±20%
free strain
in ppm
±10%
blocking force
in N
±10%
M0714-P2 7 14 16 16 13 -540 -57
M2807-P2 28 7 37 10 20 -585 -35
M2814-P2 28 14 37 18 48 -630 -76
M5628-P2 56 28 66 31 187 -740 -175
M8503-P2 85 3 113 8 25 -430 -11
M8507-P2 85 7 100 10 70 -605 -38
M8514-P2 85 14 100 18 138 -630 -76
M8528-P2 85 28 103 31 264 -740 -180
M8557-P2 85 57 103 60 543 -750 -385
M8585-P2 85 85 103 88 970 -750 -585
M17007-P2 170 7 186 12 147 -600 -37

MFC P3 types, orthotropic
-60 to 360V operating voltage

Model active length
in mm
active width
in mm
overall length
in mm
overall width
in mm
Capacitance
in nF
±20%
free strain
in ppm
±10%
blocking force
in N
±10%
M2814-P3 28 14 37 18 50 -620 -95
M5628-P3 56 28 70 34 211 -800 -240
M8528-P3 85 28 103 31 355 -800 -240
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