Hybrid composite actuator with shape retention capability for morphing flap of unmanned aerial vehicle (UAV)

Kim, Nam-Geuk; Han, Min‐Woo; Iakovleva, A. P.; Park, Hyung-Bin; Chu, Wujin; Ahn, Sung‐Hoon

doi:10.1016/j.compstruct.2020.112227

Cited by 27 publications

(15 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Unfortunately, because this was a 1W-SM effect, subsequent shape memory programming was be needed for further deflection of the control surface, which is not compatible with realistic flight control. More recently, a hybrid shape memory composite actuator has been developed as a laminate composed of SMA wires and SMP filled with nichrome for morphing flap flight . Resistive heating was induced in the composite structure by injecting a current of 0.7 A in the SMA wires and of 0.4 A in the SMP–nichrome composite.…”

Section: Applicationsmentioning

confidence: 99%

“…More recently, a hybrid shape memory composite actuator has been developed as a laminate composed of SMA wires and SMP filled with nichrome for morphing flap flight. 165 Resistive heating was induced in the composite structure by injecting a current of 0.7 A in the SMA wires and of 0.4 A in the SMP–nichrome composite. The authors used this composite for the morphing of the trailing edge of the wings of an unmanned aerial vehicle, resulting in deformation angles between 32 and 39°, as shown in Figure 12 .…”

Section: Applicationsmentioning

confidence: 99%

“…The actuation mechanism is through resistive heating of both the SMA wires and the SMP–nichrome composite. (Reprinted from ref ( 165 ), with permission from Elsevier.)…”

Section: Applicationsmentioning

confidence: 99%

See 2 more Smart Citations

Review of Thermoresponsive Electroactive and Magnetoactive Shape Memory Polymer Nanocomposites

et al. 2022

View full text Add to dashboard Cite

Electroactive and magnetoactive shape memory polymer nanocomposites (SMCs) are multistimuli-responsive smart materials that are of great interest in many research and industrial fields. In addition to thermoresponsive shape memory polymers, SMCs include nanofillers with suitable electric and/or magnetic properties that allow for alternative and remote methods of shape memory activation. This review discusses the state of the art on these electro- and magnetoactive SMCs and summarizes recently published investigations, together with relevant applications in several fields. Special attention is paid to the shape memory characteristics (shape fixity and shape recovery or recovery force) of these materials, as well as to the magnitude of the electric and magnetic fields required to trigger the shape memory characteristics.

show abstract

Section: Applicationsmentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

See 1 more Smart Citation

Review of Thermoresponsive Electroactive and Magnetoactive Shape Memory Polymer Nanocomposites

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Considering diverse flight conditions and impact situations, actively deforming the origami structure will improve its effectiveness. Shape memory alloys (SMA) are available for deformable structures; SMAs are materials that return to their original form when heated above their phase transition temperature [ 45 , 46 , 47 , 48 ]. In particular, SMA springs are highly useful in deformable structures because they can generate a large deformation in a simple and lightweight form.…”

Section: Introductionmentioning

confidence: 99%

Origami and Kirigami Structure for Impact Energy Absorption: Its Application to Drone Guards

Park

Lee

Jang

et al. 2023

Sensors

Self Cite

View full text Add to dashboard Cite

As the use of drones grows, so too does the demand for physical protection against drone damage resulting from collisions and falls. In addition, as the flight environment becomes more complicated, a shock absorption system is required, in which the protective structure can be deformed based on the circumstances. Here, we present an origami- and kirigami-based structure that provides protection from various directions. This research adds a deformation capacity to existing fixed-shape guards; by using shape memory alloys, the diameter and height of the protective structure are controlled. We present three protective modes (1: large diameter/low height; 2: small diameter/large height; and 3: lotus shaped) that mitigate drone falls and side collisions. From the result of the drop impact test, mode 2 showed a 78.2% reduction in the maximum impact force at side impact. We incorporated kirigami patterns into the origami structures in order to investigate the aerodynamic effects of the hollow patterns. Airflow experiments yielded a macro understanding of flow-through behaviors on each kirigami pattern. In the wind speed experiment, the change in airflow velocity induced by the penetration of the kirigami pattern was measured, and in the force measurement experiment, the air force applied to the structure was determined.

show abstract

“…Ameduri et al [20] exploited an SMA torque tube to induce a certain twist law along the blade while preserving its integrability within the structure. Kim et al [21] designed a hybrid actuator capable of shape retention, integrated with an SMP scaffold and an SMA wire. The hybrid composite actuator could maintain a deformed state without additional current for heating by using the shape memory effects of SMP.…”

Section: Introductionmentioning

confidence: 99%

Design of a Morphing Skin with Shape Memory Alloy Based on Equivalent Thermal Stress Approach

Zhang

Gao

et al. 2022

Micromachines

View full text Add to dashboard Cite

Shape memory alloy (SMA) is one of the potential driving devices for morphing aircraft due to its advantages of pseudoelasticity, superelasticity, and shape memory effect. Precise and fast analysis of SMA has simultaneously become a key requirement for industrial applications. In this study, a user-defined material subroutine (UMAT) was implemented and successfully applied in a three-dimensional numerical simulation in ABAQUS based on the extended Boyd–Lagoudas model. In addition to the conventional detwinned martensite (Md) and austenite (A), twinned martensite (Mt) was also considered to model the practical transformation accurately. Then, the equivalent thermal strain approach was adopted to simplify the simulation complexity with UMAT. By resetting the thermal expansion coefficient, the thermal strain equivalent to the original phase transformation strain was generated. The approach was validated in two cases, showing consistent results with the extended Boyd–Lagoudas model and reduction in time consumption by 89.1%. Lastly, an active morphing skin integrating the single-range SMA and a stainless-steel plate was designed to realize two-way morphing. The calculated arc height variation of the skin was 3.74 mm with a relative error of 1.84% compared to the experimental result of 3.81 mm. The coupled use of UMAT and the equivalent thermal stress approach helped to reduce the challenge in modeling SMA.

show abstract

Hybrid composite actuator with shape retention capability for morphing flap of unmanned aerial vehicle (UAV)

Cited by 27 publications

References 39 publications

Review of Thermoresponsive Electroactive and Magnetoactive Shape Memory Polymer Nanocomposites

Review of Thermoresponsive Electroactive and Magnetoactive Shape Memory Polymer Nanocomposites

Origami and Kirigami Structure for Impact Energy Absorption: Its Application to Drone Guards

Design of a Morphing Skin with Shape Memory Alloy Based on Equivalent Thermal Stress Approach

Contact Info

Product

Resources

About