The influence of background ultrasonic field on the strength of adhesive zones under dynamic impact loads

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The influence of background ultrasonic field on the strength of adhesive zones under dynamic impact loads. / Volkov, Grigory; Logachev, Andrey; Granichin, Nikolai; Zhao, Ya Pu; Zhang, Yin; Petrov, Yuri.

In: Materials, Vol. 14, No. 12, 3188, 09.06.2021.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{7c6337ec5c1a4450aafadb064cd522fc,

title = "The influence of background ultrasonic field on the strength of adhesive zones under dynamic impact loads",

abstract = "The influence of background ultrasonic field on the ultimate dynamic strength of adhesive joints is studied using fracture mechanics analysis. Winkler foundation-type models are applied to describe the cohesion zone, and the incubation time fracture criterion is used. The challenging task is to study whether relatively weak ultrasound is able to decrease the threshold values of the exter-nal impact load depending on a joint model, such as an “elastic membrane” or “beam” approxima-tion, and various boundary conditions at the ends. The specific task was to investigate the case of short pulse loading through application of time-dependent fracture criterion instead of the conventional principle of critical stress. Three different load cases, namely, step constant force, dynamic pulse, and their combination with ultrasonic vibrations, were also studied. The analytical solution to the problem demonstrates that background vibrations at certain frequencies can significantly decrease threshold values of fracture impact load. Specific calculations indicate that even a weak background sonic field is enough to cause a significant reduction in the threshold amplitude of a dynamic short pulse load. Additionally, non-monotonic dependency of threshold amplitude on pulse duration for weak background field was observed, which demonstrates the existence of optimal regimes of impact energy input. Moreover, this phenomenon does not depend on the way in which the beam edges mount, whether they are clamped or hinged, and it could be applied for micro-electro-mechanical switch design processes as an additional tool to control operational regimes.",

keywords = "Adhesive joint strength, Background ultrasonic field, Dynamic impact, Fracture dynamics, Incubation time criterion, LAW, dynamic impact, STABILITY, BEHAVIOR, DRY, ANGLE, FAILURE, FRACTURE, fracture dynamics, background ultrasonic field, incubation time criterion, adhesive joint strength",

author = "Grigory Volkov and Andrey Logachev and Nikolai Granichin and Zhao, {Ya Pu} and Yin Zhang and Yuri Petrov",

note = "Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2021",

month = jun,

day = "9",

doi = "10.3390/ma14123188",

language = "English",

volume = "14",

journal = "Materials",

issn = "1996-1944",

publisher = "MDPI AG",

number = "12",

}

RIS

TY - JOUR

T1 - The influence of background ultrasonic field on the strength of adhesive zones under dynamic impact loads

AU - Volkov, Grigory

AU - Logachev, Andrey

AU - Granichin, Nikolai

AU - Zhao, Ya Pu

AU - Zhang, Yin

AU - Petrov, Yuri

PY - 2021/6/9

Y1 - 2021/6/9

N2 - The influence of background ultrasonic field on the ultimate dynamic strength of adhesive joints is studied using fracture mechanics analysis. Winkler foundation-type models are applied to describe the cohesion zone, and the incubation time fracture criterion is used. The challenging task is to study whether relatively weak ultrasound is able to decrease the threshold values of the exter-nal impact load depending on a joint model, such as an “elastic membrane” or “beam” approxima-tion, and various boundary conditions at the ends. The specific task was to investigate the case of short pulse loading through application of time-dependent fracture criterion instead of the conventional principle of critical stress. Three different load cases, namely, step constant force, dynamic pulse, and their combination with ultrasonic vibrations, were also studied. The analytical solution to the problem demonstrates that background vibrations at certain frequencies can significantly decrease threshold values of fracture impact load. Specific calculations indicate that even a weak background sonic field is enough to cause a significant reduction in the threshold amplitude of a dynamic short pulse load. Additionally, non-monotonic dependency of threshold amplitude on pulse duration for weak background field was observed, which demonstrates the existence of optimal regimes of impact energy input. Moreover, this phenomenon does not depend on the way in which the beam edges mount, whether they are clamped or hinged, and it could be applied for micro-electro-mechanical switch design processes as an additional tool to control operational regimes.

AB - The influence of background ultrasonic field on the ultimate dynamic strength of adhesive joints is studied using fracture mechanics analysis. Winkler foundation-type models are applied to describe the cohesion zone, and the incubation time fracture criterion is used. The challenging task is to study whether relatively weak ultrasound is able to decrease the threshold values of the exter-nal impact load depending on a joint model, such as an “elastic membrane” or “beam” approxima-tion, and various boundary conditions at the ends. The specific task was to investigate the case of short pulse loading through application of time-dependent fracture criterion instead of the conventional principle of critical stress. Three different load cases, namely, step constant force, dynamic pulse, and their combination with ultrasonic vibrations, were also studied. The analytical solution to the problem demonstrates that background vibrations at certain frequencies can significantly decrease threshold values of fracture impact load. Specific calculations indicate that even a weak background sonic field is enough to cause a significant reduction in the threshold amplitude of a dynamic short pulse load. Additionally, non-monotonic dependency of threshold amplitude on pulse duration for weak background field was observed, which demonstrates the existence of optimal regimes of impact energy input. Moreover, this phenomenon does not depend on the way in which the beam edges mount, whether they are clamped or hinged, and it could be applied for micro-electro-mechanical switch design processes as an additional tool to control operational regimes.

KW - Adhesive joint strength

KW - Background ultrasonic field

KW - Dynamic impact

KW - Fracture dynamics

KW - Incubation time criterion

KW - LAW

KW - dynamic impact

KW - STABILITY

KW - BEHAVIOR

KW - DRY

KW - ANGLE

KW - FAILURE

KW - FRACTURE

KW - fracture dynamics

KW - background ultrasonic field

KW - incubation time criterion

KW - adhesive joint strength

UR - http://www.scopus.com/inward/record.url?scp=85108378802&partnerID=8YFLogxK

U2 - 10.3390/ma14123188

DO - 10.3390/ma14123188

M3 - Article

AN - SCOPUS:85108378802

VL - 14

JO - Materials

JF - Materials

SN - 1996-1944

IS - 12

M1 - 3188

ER -

ID: 88216318