2015
DOI: 10.1088/0964-1726/24/3/035008
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Design and experimental characterization of a NiTi-based, high-frequency, centripetal peristaltic actuator

Abstract: Abstract. Development and experimental testing of a device for peristaltic pumping We present and discuss the results of the full experimental investigation of the actuator performance, measured in terms of its ability to reduce the pipe diameter, at a sustained frequency of 1.5 Hz. Moreover, we investigate how the diameter contraction is influenced ✿✿✿✿✿✿ affected ✿ by various design parameters as well as actuation frequencies up to 4 Hz. We manage to make the NiTi wire work at 3% in strain, cyclically provid… Show more

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Cited by 18 publications
(14 citation statements)
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“…Equation (23) shows that, for given geometry (d, D, a) and prestretch (e 0 SMA ), the stress in the activated SMA wire increases with the Young's modulus E of the core. The upper limit of the maximum stress is (r SMA ) max ¼ E a e 0 SMA , which is achieved for E !…”
Section: Experimental Validationmentioning
confidence: 99%
See 1 more Smart Citation
“…Equation (23) shows that, for given geometry (d, D, a) and prestretch (e 0 SMA ), the stress in the activated SMA wire increases with the Young's modulus E of the core. The upper limit of the maximum stress is (r SMA ) max ¼ E a e 0 SMA , which is achieved for E !…”
Section: Experimental Validationmentioning
confidence: 99%
“…The rubber cylinder also provides the backup force for restoring the initial stretch in the wire upon cooling. This concept was inspired by the centripetal action exerted by an outer jacket of SMA wires in a variety of applications including adaptive rubber mounts, 16 tubular peristaltic pumps, [17][18][19][20][21][22][23] pneumatic muscles, 24 soft robots, 25,26 counterpressure space suits, 27 smart fabrics, 28 adaptive bandages, 29 biomedical compliant structures 30,31 and active confinement of concrete columns. [32][33][34] The original paper by Dragoni and Scir e 15 developed an analytical model for the actuator, compared the theory with finite element analyses and described the construction of a proof-of-concept physical prototype.…”
Section: Introductionmentioning
confidence: 99%
“…NiTi is the most industrially exploited shape memory alloy because of its high mechanical stability, high strain recovery, high damping property, biocompatibility and corrosion resistance thus finding numerous engineering applications. The main uses of NiTi are medicine (such as stents, grafts, orthopedic staples, orthodontic archwires, eyeglass frames, sutures; Petrini and Migliavacca, 2011;Wen et al, 2018;Nespoli et al, 2015), aerospace and military (such as couplers in F14 planes, morphing, low-shock release and deployment; Hartl and Lagoudas, 2007;Simiriotis et al, 2021), safety (like damper and sprinklers; Huang et al, 2020;Zhang et al, 2020;Fang et al, 2020;Huang et al, 2020) and robotics (such as actuators; Copaci et al, 2020;Nespoli et al, 2010aNespoli et al, , 2010bNespoli et al, , 2012Nespoli et al, , 2014Borlandelli et al, 2015).…”
Section: Introductionmentioning
confidence: 99%
“…Their driving mechanisms are based on U-SMA [30], [31], DE [32] and CP [33] actuators. In [30] and in [31], U-SMA wire actuators are used to compress and expand soft tubes. The bases of these pumps support the tubes and additionally facilitate U-SMA cooling and thus permit higher bandwidths.…”
Section: Introductionmentioning
confidence: 99%