Future applications of Ni-Ti alloys in automotive safety systems

Gheorghita, V.; Gümpel, Paul; Chiru, Anghel; Strittmatter, Joachim

doi:10.1007/s12239-014-0049-z

Cited by 17 publications

(5 citation statements)

References 17 publications

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“…Recently, various studies on Ni-Ti alloys of different thicknesses have demonstrated that an increase in thickness reduces the deformation during a collision. The use of a honeycomb structure pad with SMA and rubber as a damper, has shown great promise in increasing the performance of the bumper, providing greater protection than the conventional design (Arun and Godi, 2015; Asadpoori et al, 2021; Gheorghita et al, 2013a).…”

Section: Smas In Automotive Applicationsmentioning

confidence: 99%

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A review on shape memory alloys and their prominence in automotive technology

Shreekrishna

Radhika

Nair

2022

Journal of Intelligent Material Systems and Structures

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The current generation of automobiles is known for its sophisticated safety, comfort, and performance characteristics, which were developed in order to meet the ever-growing competition and advancement in the automotive field. Consequently, the development of smart materials with unique and exceptional properties is also gaining momentum. Of the various smart material currently applied in automotive technology, Shape Memory Alloys (SMAs), which boast the unique properties of shape memory effect and pseudo-elasticity, are steadily gaining popularity. The most prevalent automotive application of this material is in SMA actuators. These actuators are compact, lightweight alternatives to mechanical actuators, providing silent operation, enhanced reliability, durability, and resistance to humidity, shock, and vibrations. They are used in a variety of automotive systems such as adjustable mirrors, windshield wipers, door locks, smart bonnets, tumble flaps, governor valves, fog louvers, hatch vents, and many more. Among the various commercially available SMAs, Ni-Ti alloys are the most extensively used in most of these applications. This paper provides an overview of the properties, applications, and challenges of SMAs in the automotive sector.

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Section: Smas In Automotive Applicationsmentioning

confidence: 99%

“…There is thus a need for a more design-centered approach to SMA research backed up by extensive metallurgical research. Much stronger coordination between material scientists and designers is required for further innovations and growth in the field of SMAs (Ditman et al, 1996; Gheorghita et al, 2013a; Predki and Bauer, 2010).…”

Section: Future Aspectsmentioning

confidence: 99%

A review on shape memory alloys and their prominence in automotive technology

Shreekrishna

Radhika

Nair

2022

Journal of Intelligent Material Systems and Structures

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“…Due to its unique qualities such as super elasticity, strong resistance against corrosion, high fatigue resistivity, and shape memory effects, Titanium-Nickel SMA has been used in biomedical and industrial engineering sectors [1]. The medical application includes optometry, orthopaedic surgery, dental, whereas industrial engineering includes engines, robotics, spacecraft [2] and in automotive safety industry [3]. SMAs are widely used in the civil field to reduce the effect caused by earthquakes or by environmental effects [4].…”

Section: Introductionmentioning

confidence: 99%

Study of Machining Characteristics of Non-conventional Methods

Kolhapure¹,

Badkar²

2023

Advances in Computer Science Research

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Smart alloy, which is typically called a shape memory alloy (SMA), have wide application in industry such as in aircraft, spacecraft, automotive, robotics, in civil structures, piping, medical field, engines, due to its shape memory effect, biocompatibility, strong resistance against corrosion, anti-fatigue characteristic. In a traditional machining method, physical contact occurs between workpiece and tool (SMA); therefore, increased tool wear and lesser dimensional stability due to pseudo-plasticity occur, which is not feasible. In contrast, different non-traditional machining methods are there, such as electrochemical machining (ECM), water jet machining (WJM), electro discharge machining (EDM), and wire electro-discharge machining (WEDM). The objective of this present work is to find a research gap. Based on the gap in a future new method, results get develop.

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“…1 The properties of such alloys are related to the thermo-mechanical ability of NiTi alloys to transform from the martensite-austenite phase, and vice versa. 2,3 These alloys are widely applied in various engineering fields, including aerospace, 4–6 automotive 7,8 and civil engineering. 9,10 Cables 11 and double layers of NiTi films 12 have been proven to dissipate stress.…”

Section: Introductionmentioning

confidence: 99%

Density functional theory study of dissociative adsorption of H₂ molecules on NiTi (001) surfaces

Arifin

Selamat

Asih

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part N:

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Ti-based alloys have the potential to be used as hydrogen storage units, including NiTi. In contrast, NiTi alloy is sensitive to H atoms. It has been found that hydrogen can cause embrittlement in NiTi alloys. Thus, it is become indispensable to elucidate the reaction of H2 molecules on the NiTi surface. Using density functional theory, we investigated the dissociation mechanism of H2 molecules on the B2 NiTi (001) surface. We found that H atoms tend to come closer to Ni atoms on the Ti- and Ni-terminated (NiTi) (001) substrate. The calculation results showed that the adsorption energy of H atoms at the hollow site was higher than that at the top site. We identified two dissociation mechanisms of H2 molecules on Ti and Ni terminated on NiTi (001) substrates via the hollow sites of the adsorption route. The adsorption energy values obtained were extremely low, that is, 0.23 and 0.38 eV for the Ni and Ti terminated of NiTi (001) substrates, respectively. The dissociation reaction of H2 molecules, which is an exothermic reaction, can quickly occur on the NiTi (001) surface because of the low activation energy.

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Future applications of Ni-Ti alloys in automotive safety systems

Cited by 17 publications

References 17 publications

A review on shape memory alloys and their prominence in automotive technology

A review on shape memory alloys and their prominence in automotive technology

Study of Machining Characteristics of Non-conventional Methods

Density functional theory study of dissociative adsorption of H₂ molecules on NiTi (001) surfaces

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Future applications of Ni-Ti alloys in automotive safety systems

Cited by 17 publications

References 17 publications

A review on shape memory alloys and their prominence in automotive technology

A review on shape memory alloys and their prominence in automotive technology

Study of Machining Characteristics of Non-conventional Methods

Density functional theory study of dissociative adsorption of H2 molecules on NiTi (001) surfaces

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Density functional theory study of dissociative adsorption of H₂ molecules on NiTi (001) surfaces