Acoustic determination of molecular orientation in polymers

Rysyuk, B. D.; Nosov, M. P.; Osinin, S. G.

doi:10.1007/bf00857195

Cited by 3 publications

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mechanical behaviour of nylon 6 filaments was studied by a number of authors [283][284][285][286][287][288][289][290][291][292]. The values of some properties of nylon 6 are listed in Table 8 ^"…”

Section: "Hmentioning

confidence: 99%

The Structure and Properties of Typical Melt-spun Fibres

Mukhopadhyay¹

1988

Textile Progress

View full text Add to dashboard Cite

Section: "Hmentioning

confidence: 99%

The Structure and Properties of Typical Melt-spun Fibres

Mukhopadhyay¹

1988

Textile Progress

View full text Add to dashboard Cite

“…The conventional method used for triggering this process is via direct heating, as noted earlier; however, practical application of these materials requires using a more versatile technique for triggering their shape memory behavior. The previous works on the use of high-intensity focused ultrasound as a shape memory trigger have focused on unreinforced polymer matrices [53][54][55][56][57][58][59][60]. However, in structural applications, polymers are rarely used in pure form.…”

Section: Introductionmentioning

confidence: 99%

Numerical study of the heating effects of high intensity focused ultrasound on shape memory polymer fiber reinforced self-healing polymer composite

Nwokonkwo

Mensah

Ibekwe

et al. 2021

Smart Mater. Struct.

View full text Add to dashboard Cite

In polymer composites, constrained shape recovery, either by shape memory polymer (SMP) matrix or embedded SMP fibers, is utilized to close wide-opened cracks, followed by molecular scale healing either extrinsically or intrinsically, the so-called close-then-heal strategy. The most popular means to trigger shape recovery and healing is by heating. In this study, the potential for using high intensity focused ultrasound as a trigger for shape memory effect and self-healing of an SMP fiber-reinforced thermosetting polymer composite was explored. The objectives of the study were achieved via a finite element simulation in COMSOL Multiphysics. Simulation results showed that for an 8 mm thick, 18 mm long model composite with 5.8% SMP fiber volume fraction, a temperature rise of up to 5.6 K was obtained in the embedded SMP fiber after 2 s with only 1 s of the insonation. It was found that heat generation occurred at the fiber–matrix interfaces; however, subsequent temperature rise within the embedded fibers was achieved via conventional thermal conduction from the high-temperature interfacial regions into the fibers. The effect of specimen length, thickness, and fiber volume fraction on temperature rising was also evaluated. This study provides a better understanding of using ultrasound to trigger self-healing of SMP fiber-reinforced polymer composites.

show abstract

Investigation of oriented polycarbonate by an acoustical method

Perepechko¹,

Prokazov²

1978

Polymer Mechanics

View full text Add to dashboard Cite

Acoustic determination of molecular orientation in polymers

Cited by 3 publications

References 9 publications

The Structure and Properties of Typical Melt-spun Fibres

The Structure and Properties of Typical Melt-spun Fibres

Numerical study of the heating effects of high intensity focused ultrasound on shape memory polymer fiber reinforced self-healing polymer composite

Investigation of oriented polycarbonate by an acoustical method

Contact Info

Product

Resources

About