Crystalline Alloys: Stainless Steels

Kajimura, Haruhiko

doi:10.1201/b15568-16

Cited by 7 publications

(15 citation statements)

References 8 publications

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“…For creep determination, the material of interest is exposed to steady uniaxial stress σ 0 and the time-dependent strain ε( t ) = δ( t )/ L 0 is measured [375]. The ratio of time-varying strain to applied constant stress provides the creep compliance:

C_{c r p} false(t false) = \frac{ε false(t false)}{σ_{0}}

For stress relaxation determination, a steady strain is applied to the material and the time-dependent stress is measured [375]. The relaxation modulus is the ratio of time-varying stress to the applied constant strain as described below:

E_{rel} false(t false) = \frac{σ false(t false)}{ε_{0}}

…”

Section: Shear Stress Responsive Hydrogelsmentioning

confidence: 99%

“…Creep and stress relaxation tests study the material responses at longer time scales, ranging from minutes to days. Dynamic tests, which assess the response of the polymeric network to sinusoidally applied stress or strain, allow for elucidation of material responses at much shorter time scales [375]. This experimental method, known as small amplitude oscillatory shear (SAOS), is a small deformation rheological technique carried out within the linear region of a polymer network [376].…”

Section: Shear Stress Responsive Hydrogelsmentioning

confidence: 99%

See 1 more Smart Citation

Stimulus-responsive hydrogels: Theory, modern advances, and applications

Koetting

Peters

Steichen

et al. 2015

Materials Science and Engineering: R: Reports

900

688

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Over the past century, hydrogels have emerged as effective materials for an immense variety of applications. The unique network structure of hydrogels enables very high levels of hydrophilicity and biocompatibility, while at the same time exhibiting the soft physical properties associated with living tissue, making them ideal biomaterials. Stimulus-responsive hydrogels have been especially impactful, allowing for unprecedented levels of control over material properties in response to external cues. This enhanced control has enabled groundbreaking advances in healthcare, allowing for more effective treatment of a vast array of diseases and improved approaches for tissue engineering and wound healing. In this extensive review, we identify and discuss the multitude of response modalities that have been developed, including temperature, pH, chemical, light, electro, and shear-sensitive hydrogels. We discuss the theoretical analysis of hydrogel properties and the mechanisms used to create these responses, highlighting both the pioneering and most recent work in all of these fields. Finally, we review the many current and proposed applications of these hydrogels in medicine and industry.

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C_{c r p} false(t false) = \frac{ε false(t false)}{σ_{0}}

E_{rel} false(t false) = \frac{σ false(t false)}{ε_{0}}

…”

Section: Shear Stress Responsive Hydrogelsmentioning

confidence: 99%

Section: Shear Stress Responsive Hydrogelsmentioning

confidence: 99%

Stimulus-responsive hydrogels: Theory, modern advances, and applications

Koetting

Peters

Steichen

et al. 2015

Materials Science and Engineering: R: Reports

900

688

View full text Add to dashboard Cite

show abstract

“…Рисунок 5 -Узагальнена реологічна модель Максвелла Відповідно до узагальненої моделі Максвелла модуль релаксації може бути вираженій через пруж-ності k e , k i та в'язкості μ i (i = 1..N, де N -число демп-фуючих елементів) у вигляді експоненціальних рядів Проні [77]:…”

Section: № 39 (1261)unclassified

Review of methods for solving the contact problems of viscoelastic composite shells

Martynenko¹,

Lvov²

2017

Bulletin NTU "KhPI": JDSM

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Представлено аналіз існуючих методів розв'язання контактних задач анізотропних в'язкопружних композиційних оболонок. Описана історія застосування та розвитку композиційних матеріалів. Встановлено, що на даний момент розроблені моделі в'язкопружної поведінки полімерних матеріалів та їхніх композитів, а також методи моделювання температурних залежнос-тей їхніх механічних властивостей. Розглянуті методики дозволяють розв'язувати задачі механіки пружних тонких та товс-тих ізотропних та анізотропних оболонок, контактні задачі теорії пружних ортотропних оболонок, плоскі контактні задачі теорії в'язкопружності.Ключові слова: в'язкопружність, ортотропія, ядро релаксації, ряди Проні, зсувна функція, контактна задача.Представлен анализ существующих методов решения контактных задач анизотропных вязкоупругих композиционных обо-лочек. Описана история применения и развития композиционных материалов. Установлено, что на данный момент разрабо-таны модели вязкоупругого поведения полимерных материалов и их композитов, а также методы моделирования темпера-турных зависимостей их механических свойств. Рассмотренные методики позволяют решать задачи механики упругих тон-ких и толстых изотропных и анизотропных оболочек, контактные задачи теории упругих ортотропных оболочек, плоские контактные задачи теории вязкоупругости. Ключевые слова: вязкоупругость, ортотропия, ядро релаксации, ряды Прони, сдвиговая функция, контактная задача.The paper presents an analysis of the existing methods for solving the contact problems of viscoelastic composite shells. The described history of using and development of composite materials shows that they have been finding a wide application. It is found, that the developed models of viscoelastic behavior of polymeric materials and their composites as well as methods of modelling of its temperature dependencies reflect the real properties with a sufficient accuracy. The considered techniques allow solving the structural problems of elastic thin and thick isotropic and anisotropic shells, the contact problems of elastic orthotropic shells, as well as the plane contact problems of the viscoelasticity theory. At the same time it is investigated that there are no any complex approaches for solving the contact problems of viscoelastic orthotropic shells at present.

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“…1. It consists of a linear spring in parallel with a Maxwell arm, which in turn consists of a linear spring in series with a linear damper [13–14 25]. The SLS is the simplest viscoelastic model that is capable of reproducing the most fundamental viscoelastic behaviors, namely creep and stress relaxation [13–14 18,25].…”

Section: Introductionmentioning

confidence: 99%

“…It consists of a linear spring in parallel with a Maxwell arm, which in turn consists of a linear spring in series with a linear damper [13–14 25]. The SLS is the simplest viscoelastic model that is capable of reproducing the most fundamental viscoelastic behaviors, namely creep and stress relaxation [13–14 18,25]. There exist simpler models [13], such as the Maxwell model by itself (described above) and the Kelvin–Voigt model, which consists of a linear spring in parallel with a linear damper (this model is used in CR-AFM [3]).…”

Section: Introductionmentioning

confidence: 99%

Nanoscale effects in the characterization of viscoelastic materials with atomic force microscopy: coupling of a quasi-three-dimensional standard linear solid model with in-plane surface interactions

Solares

2016

Beilstein J. Nanotechnol.

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SummarySignificant progress has been accomplished in the development of experimental contact-mode and dynamic-mode atomic force microscopy (AFM) methods designed to measure surface material properties. However, current methods are based on one-dimensional (1D) descriptions of the tip–sample interaction forces, thus neglecting the intricacies involved in the material behavior of complex samples (such as soft viscoelastic materials) as well as the differences in material response between the surface and the bulk. In order to begin to address this gap, a computational study is presented where the sample is simulated using an enhanced version of a recently introduced model that treats the surface as a collection of standard-linear-solid viscoelastic elements. The enhanced model introduces in-plane surface elastic forces that can be approximately related to a two-dimensional (2D) Young’s modulus. Relevant cases are discussed for single- and multifrequency intermittent-contact AFM imaging, with focus on the calculated surface indentation profiles and tip–sample interaction force curves, as well as their implications with regards to experimental interpretation. A variety of phenomena are examined in detail, which highlight the need for further development of more physically accurate sample models that are specifically designed for AFM simulation. A multifrequency AFM simulation tool based on the above sample model is provided as supporting information.

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Crystalline Alloys: Stainless Steels

Cited by 7 publications

References 8 publications

Stimulus-responsive hydrogels: Theory, modern advances, and applications

Stimulus-responsive hydrogels: Theory, modern advances, and applications

Review of methods for solving the contact problems of viscoelastic composite shells

Nanoscale effects in the characterization of viscoelastic materials with atomic force microscopy: coupling of a quasi-three-dimensional standard linear solid model with in-plane surface interactions

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