scholarly journals Characteristics of Films Deposited by New LPCVD Using Lamp Heating. Measurement Method of Young's Modulus by Large Bending Theory and Mechanical Characteristics of Polysilicon Film Deposited.

2000 ◽  
Vol 66 (8) ◽  
pp. 1247-1251
Author(s):  
Tetsuo UEDA ◽  
Katsutoshi KURIBAYASHI ◽  
Satoru HASEGAWA
Keyword(s):  
Young’S Modulus ◽  
Measurement Method ◽  
Mechanical Characteristics ◽  
Young's Modulus ◽  
Polysilicon Film

scholarly journals High-Temperature Elastic Properties of Yttrium-Doped Barium Zirconate

Metals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 968
Author(s):  
Fumitada Iguchi ◽  
Keisuke Hinata
Keyword(s):  
High Temperature ◽  
Young’S Modulus ◽  
Elastic Properties ◽  
Measurement Method ◽  
Young's Modulus ◽  
Barium Zirconate ◽  
Shear Moduli ◽  
Ceramic Fuel ◽  
Yttrium Concentration ◽  
Ceramic Fuel Cells

The elastic properties of 0, 10, 15, and 20 mol% yttrium-doped barium zirconate (BZY0, BZY10, BZY15, and BZY20) at the operating temperatures of protonic ceramic fuel cells were evaluated. The proposed measurement method for low sinterability materials could accurately determine the sonic velocities of small-pellet-type samples, and the elastic properties were determined based on these velocities. The Young’s modulus of BZY10, BZY15, and BZY20 was 224, 218, and 209 GPa at 20 °C, respectively, and the values decreased as the yttrium concentration increased. At high temperatures (>20 °C), as the temperature increased, the Young’s and shear moduli decreased, whereas the bulk modulus and Poisson’s ratio increased. The Young’s and shear moduli varied nonlinearly with the temperature: The values decreased rapidly from 100 to 300 °C and gradually at temperatures beyond 400 °C. The Young’s modulus of BZY10, BZY15, and BZY20 was 137, 159, and 122 GPa at 500 °C, respectively, 30–40% smaller than the values at 20 °C. The influence of the temperature was larger than that of the change in the yttrium concentration.

Comparison of the Young’s modulus of polysilicon film by tensile testing and nanoindentation

2005 ◽  
Vol 117 (1) ◽  
pp. 151-158 ◽  
Author(s):  
Chung-Seog Oh ◽  
Hak-Joo Lee ◽  
Soon-Gyu Ko ◽  
Shin-Woo Kim ◽  
Hyun-Gyun Ahn
Keyword(s):  
Young’S Modulus ◽  
Tensile Testing ◽  
Young's Modulus ◽  
Polysilicon Film

scholarly journals Effects ofStreptococcus sanguinisBacteriocin on Deformation, Adhesion Ability, and Young’s Modulus ofCandida albicans

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Shengli Ma ◽  
Wenyu Ge ◽  
Yifan Yan ◽  
Xu Huang ◽  
Li Ma ◽  
...  
Keyword(s):  
Candida Albicans ◽  
Young’S Modulus ◽  
Measurement Method ◽  
Young's Modulus ◽  
Streptococcus Sanguinis ◽  
Adhesion Ability ◽  
Atomic Force ◽  
Ofcandida Albicans ◽  
Reaction Region ◽  
Microscopic Morphology

In order to study the thallus changes on microscopic morphology and mechanical properties ofCandida albicansantagonized byStreptococcus sanguinisbacteriocin, the adhesion ability and Young’s modulus of thalli and hypha ofCandida albicanswere measured by the relative measurement method using atomic force microscope’s (AFM) tapping model. The results showed that the average adhesion ability and Young’s modulus of thalli were7.35±0.77 nN and7.33±1.29 Mpa, respectively; the average adhesion ability and Young’s modulus of hypha were9.82±0.39 nN and4.04±0.76 Mpa, respectively. After being antagonized byStreptococcus sanguinisbacteriocin, the adhesion ability was decreased along with the increasing of deformation in reaction region and Young’s modulus followed the same changes. It could be concluded that the adhesion ability of hypha was greater than thalli, Young’s modulus of hypha was less than thalli, and adhesion ability and Young’s modulus ofCandida albicanswere decreased significantly after being antagonized byStreptococcus sanguinisbacteriocin.

scholarly journals Relationship between Thermal Diffusivity and Mechanical Properties of Wood

Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 632
Author(s):  
Yuri I. Golovin ◽  
Alexander I. Tyurin ◽  
Dmitry Yu. Golovin ◽  
Alexander A. Samodurov ◽  
Sergey M. Matveev ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Diffusivity ◽  
Young’S Modulus ◽  
Mechanical Characteristics ◽  
Young's Modulus ◽  
Brinell Hardness ◽  
Mechanical Tests ◽  
Pedunculate Oak ◽  
Young’S Moduli ◽  
Diffusivity Tensor

This paper describes an experimental study of the relationships between thermal diffusivity and mechanical characteristics including Brinell hardness, microhardness, and Young’s modulus of common pine (Pinus sylvestris L.), pedunculate oak (Quercus robur L.), and small-leaf lime (Tilia cordata Mill.) wood. A dependence of Brinell hardness and thermal diffusivity tensor components upon humidity for common pine wood is found. The results of the measurement of Brinell hardness, microhardness, Young’s modulus, and main components of thermal diffusivity tensor for three perpendicular cuts are found to be correlated. It is shown that the mechanical properties correlate better with the ratio of longitude to transversal thermal diffusivity coefficients than with the respective individual absolute values. The mechanical characteristics with the highest correlation with the abovementioned ratio are found to be the ratio of Young’s moduli in longitude and transversal directions. Our technique allows a comparative express assessment of wood mechanical properties by means of a contactless non-destructive measurement of its thermal properties using dynamic thermal imaging instead of laborious and material-consuming destructive mechanical tests.

scholarly journals Simultaneous Modeling of Young’s Modulus, Yield Stress, and Rupture Strain of Gelatin/Cellulose Acetate Microfibrous/Nanofibrous Scaffolds Using RSM

2021 ◽  
Vol 9 ◽  
Author(s):  
Alireza Barazesh ◽  
Mahdi Navidbakhsh ◽  
Ali Abouei Mehrizi ◽  
Mojtaba Koosha ◽  
Sajad Razavi Bazaz ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Cellulose Acetate ◽  
Yield Stress ◽  
Young’S Modulus ◽  
Mechanical Characteristics ◽  
Rotation Speed ◽  
Young's Modulus ◽  
Structural Parameters ◽  
Weight Ratio ◽  
Wide Range

Electrospinning is a promising method to fabricate bioengineered scaffolds, thanks to utilizing various types of biopolymers, flexible structures, and also the diversity of output properties. Mechanical properties are one of the major components of scaffold design to fabricate an efficacious artificial substitute for the natural extracellular matrix. Additionally, fiber orientations, as one of the scaffold structural parameters, could play a crucial role in the application of fabricated fibrous scaffolds. In this study, gelatin was used as a highly biocompatible polymer in blend with cellulose acetate (CA), a polysaccharide, to enhance the achievable range of mechanical characteristics to fabricated fibrous electrospun scaffolds. By altering input variables, such as polymers concentration, weight ratio, and mandrel rotation speed, scaffolds with various mechanical and morphological properties could be achieved. As expected, the electrospun scaffold with a higher mandrel rotation speed shows higher fiber alignment. A wide range of mechanical properties were gained through different values of polymer ratio and total concentration. A general improvement in mechanical strength was observed by increasing the concentration and CA content in the solution, but contradictory effects, such as high viscosity in more concentrated solutions, influenced the mechanical characteristics as well. A response surface method was applied on experimental results in order to describe a continuous variation of Young’s modulus, yield stress, and strain at rupture. A full quadratic version of equations with the 95% confidence level was applied for the response modeling. This model would be an aid for engineers to adjust mandrel rotation speed, solution concentration, and gelatin/CA ratio to achieve desired mechanical and structural properties.

scholarly journals Pengukuran Modulus Young dengan Analisis Keadaan Resonansi Batang Aluminium yang Bergetar Menggunakan ImageMeter

2017 ◽  
Vol 2 ◽  
pp. 346
Author(s):  
Maria Tefa ◽  
Ign Edi Santosa
Keyword(s):  
Magnetic Field ◽  
Experimental Data ◽  
Young’S Modulus ◽  
Natural Frequency ◽  
Measurement Method ◽  
Young's Modulus ◽  
Resonance Condition ◽  
Alternating Current ◽  
Resonance Frequencies ◽  
The Magnetic Field

<p class="AbstractEnglish"><strong>Abstract:</strong> An experiment to determine Young’s Modulus by analyzing the vibrations of an aluminum bar has been conducted. The aluminium bar is vibrated by the magnetic field. A tiny magnet is glued at the free end of the bar. A coil carrying an alternating current generates an alternating magnetic field. The resonance condition is investigated by the measurement of its wavelength using the ImageMeter application. The natural frequency of the aluminum bar is determined from the measurement of its resonance frequencies. The natural frequency and the bar length are used to calculate Young’s Modulus. The experimental data shows the Young’s Modulus of aluminum is . This measurement method is used for learning purposes.</p><p class="KeywordsEngish"> </p><p class="AbstrakIndonesia"><strong>Abstrak:</strong> Telah dilakukan pengukuran nilai Modulus Young dengan analisis getaran dari sebuah batang aluminium. Batang aluminium digetarkan dengan medan magnet. Magnet kecil ditempelkan pada bagian ujung batang aluminium yang bebas. Sebuah kumparan yang berada di bawah ujung batang aluminium  diberi arus bolak balik yang dapat diatur frekuensinya. Pada frekuensi tertentu akan terjadi resonansi dengan mengikuti pola yang khas. Keadaan resonansi batang aluminium ini dibuktikan dari hasil pengukuran panjang λ menggunakan aplikasi <em>ImageMeter</em>. Selanjutnya frekuensi alami batang aluminium ditentukan dari pengukuran frekuensi resonansinya. Nilai Modulus Young aluminium dihitung dari nilai frekuensi alami dan panjang batang. Dari hasil pengukuran diperoleh nilai Modulus Young . Metoda pengukuran ini digunakan untuk keperluan pembelajaran.</p><p class="KataKunci"><strong></strong><em><br /></em></p>

scholarly journals Quantitative Visualization of the Nanomechanical Young’s Modulus of Soft Materials by Atomic Force Microscopy

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1593
Author(s):  
Seongoh Kim ◽  
Yunkyung Lee ◽  
Manhee Lee ◽  
Sangmin An ◽  
Sang-Joon Cho
Keyword(s):  
Young’S Modulus ◽  
Mechanical Characteristics ◽  
Young's Modulus ◽  
Target Surface ◽  
Soft Materials ◽  
Industrial Applications ◽  
Sample Type ◽  
Atomic Force ◽  
Quantitative Visualization ◽  
Tip Radius

The accurate measurement of nanoscale mechanical characteristics is crucial in the emerging field of soft condensed matter for industrial applications. An atomic force microscope (AFM) can be used to conduct nanoscale evaluation of the Young’s modulus on the target surface based on site-specific force spectroscopy. However, there is still a lack of well-organized study about the nanomechanical interpretation model dependence along with cantilever stiffness and radius of the tip apex for the Young’s modulus measurement on the soft materials. Here, we present the fast and accurate measurement of the Young’s modulus of a sample’s entire scan surface using the AFM in a newly developed PinPointTM nanomechanical mode. This approach enables simultaneous measurements of topographical data and forcedistance data at each pixel within the scan area, from which quantitative visualization of the pixel-by-pixel topographical height and Young’s modulus of the entire scan surface was realized. We examined several models of contact mechanics and showed that cantilevers with proper mechanical characteristics such as stiffness and tip radius can be used with the PinPointTM mode to accurately evaluate the Young’s modulus depending on the sample type.

Young's Modulus Measurement of Chromium Electroplating

1991 ◽  
Vol 35 (A) ◽  
pp. 527-535 ◽  
Author(s):  
Masaaki Ohtsuka ◽  
Hideaki Hatsuok ◽  
Yukio Hirose ◽  
Hitoshi Ishii
Keyword(s):  
Residual Stress ◽  
Young’S Modulus ◽  
Mechanical Characteristics ◽  
Young's Modulus ◽  
Cutting Tools ◽  
Industrial Process ◽  
Ray Method ◽  
X Ray ◽  
Chromium Electroplating ◽  
Modulus Measurement

The electroplating of Cr has been an important industrial process for cutting tools, press machines and molds for casting. In spite of these, quite a few problems remain unsolved regarding the basic property. It is important to know the mechanical characteristics of Cr electroplated layers.In the present paper, the first part deals with the measurement of mechanical Young's modulus of Cr electroplated layers. The X-ray method was successfully applied to measure the X-ray Young's modulus and the residual stress on the Cr electroplated surface layer.

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