Design, Analysis and Experiments of a Novel in situ SEM Indentation Device

Zhao, Hongwei; Huang, Hao; Fan, Zunqiang; Yang, Zhaojun; Ma, Zhichao

doi:10.5772/48304

Cited by 3 publications

(4 citation statements)

References 36 publications

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“…Hence, the displacement of various guiding mechanisms for indentation devices was searched for the purpose of comparison. Compared with the existing guiding mechanisms for indentation devices in the literature review, the displacement of CGM had the following highlights: as seen in Table 12, the displacement of CGM was 8.75 times larger than that of [15], 15.25 times larger than that of [19], and 12 times higher than that of [20]. It could be concluded that the displacement of CGM is tremendously improved via the hybrid Taguchi-grey based fuzzy logic approach.…”

Section: Predict the Optimal Grey-fuzzy Grade Under Optimummentioning

confidence: 92%

“…However, most of available indentation instruments have complicated structures, frameworks, and large volumes. Those instruments are therefore extremely difficult to insert inside the scanning electron microscope (SEM), the transmission electron microscope (TEM), the image analysis, and so forth, because the SEM and TEM have a small volume chamber, short working distance, electromagnetic sensing, vacuum environment, and vibration sensing [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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Multiresponse Optimization of a Compliant Guiding Mechanism Using Hybrid Taguchi-Grey Based Fuzzy Logic Approach

Dao

2016

Mathematical Problems in Engineering

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Because of a lack of precisely miniaturized guiding mechanism, micro/nanoindentation devices are now difficult to integrate inside scanning electron microscope. A compliant guiding mechanism (CGM) with a compact size, serving as an accurate positioning platform, is hence proposed in this paper. The displacement and first natural frequency are the most important quality responses of CGM. The geometric parameters of CGM and applied force play a vital role in determining those responses. The experiment plan is firstly designed by Taguchi’sL27orthogonal array. A hybrid approach of Taguchi-grey based fuzzy logic is then developed to optimize two responses, simultaneously. The grey relational analysis based on the fuzzy logic is used to achieve a grey-fuzzy reasoning grade (GFRG) that combines all the quality characteristics. The GFRG, serving as a performance index, determines optimal parameter levels. Analysis of variance is conducted to assess the significant parameters affecting the responses. The confirmation results revealed that the 195 μm displacement of the CGM was many times greater than that of the previous mechanisms. It could be concluded that the quality responses of CGM can be significantly improved through the hybrid optimization approach. The proposed methodology has great applications for related compliant mechanisms and engineering sciences. Taking benefits of a compact structure into account, CGM has a great ability for micro/nanoindentation device inside scanning electron microscope.

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Section: Predict the Optimal Grey-fuzzy Grade Under Optimummentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Multiresponse Optimization of a Compliant Guiding Mechanism Using Hybrid Taguchi-Grey Based Fuzzy Logic Approach

Dao

2016

Mathematical Problems in Engineering

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“…Each set of temperature and ethylene-selective data is imported into a program for regression analysis using Python programming software [1]. Since the 21 sets of experimental steps are roughly the same, only one set of experimental regression analysis specific steps are shown here.…”

Section: Exponential Function 𝒚𝒚 = 𝒄𝒄𝒆𝒆 𝜷𝜷𝜷𝜷 (𝒄𝒄 > 𝟎𝟎)mentioning

confidence: 99%

“…Ethylene is an important organic chemical basic raw material, but also one of the most basic raw materials of petrochemical industry, through catalyst combination catalytic ethanol can be produced to prepare ethylene [1][2][3]. However, under the reaction of different catalyst combinations and temperatures, the selectivity and ethylene yield of ethylene are not the same.…”

Section: Introductionmentioning

confidence: 99%

Exploring ethanol-coupled preparation of ethylene based on nonlinear regression analysis

Zhou

Sun

2023

Third International Conference on Artificial Intelligence and Computer Engineering (ICAICE 2022)

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In this paper, the scatter plots of ethylene selectivity and temperature changes are firstly studied. It can be found that some functional relationships consistent with the scatter trend. By nonlinear regression analysis, the relationship models between ethylene selectivity and temperature are proposed under different catalyst combinations. For the ethanolcoupled preparation of ethylene, the performance of preparation provides a reference for selecting catalysts to design optimal performance reactions. Compared with the original regression model, the final chosen regression function in this paper diverges much lesser from the actual data and the fitting efficiency is better.

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Optimal Design and Analysis for a New 1-DOF Compliant Stage Based on Additive Manufacturing Method for Testing Medical Specimens

Dang

Le²,

Tran³

et al. 2022

Symmetry

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In situ nanoindentation is extensively employed for online observing deformation and mechanical behaviors of bio-materials. However, the existing designs of the positioning stages have limited performances for testing soft or hard biomaterials. Consequently, this paper proposes a new structural design of a compliant one degree of freedom (01-DOF) stage with faster response. In addition to a new design, this article applies an analytical method to estimate the kinematic and dynamic behaviors of the stage. Firstly, the 01-DOF stage is designed with two modules, including a displacement amplifier with six levers and a symmetric parallelogram mechanism. Secondly, a kinetostatic diagram of the stage is built by pseudo-rigid-body method. Then, the dynamic equation of the proposed stage is formulated using the Lagrange method. In order to speed up the response of the indentation system, the structural optimization of the stage is conducted via the Firefly algorithm. The results showed that the theoretical first-order resonant frequency is found at about 226.8458 Hz. The theoretical consequences are nearby to the verified simulation. Besides, this achieved frequency of the presented stage is greater than that of previous stages. In an upcoming study, the prototype will be fabricated by additive manufacturing method or a computerized wire cutting method in order to verify the analytical results with experimental results.

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Design, Analysis and Experiments of a Novel in situ SEM Indentation Device

Cited by 3 publications

References 36 publications

Multiresponse Optimization of a Compliant Guiding Mechanism Using Hybrid Taguchi-Grey Based Fuzzy Logic Approach

Multiresponse Optimization of a Compliant Guiding Mechanism Using Hybrid Taguchi-Grey Based Fuzzy Logic Approach

Exploring ethanol-coupled preparation of ethylene based on nonlinear regression analysis

Optimal Design and Analysis for a New 1-DOF Compliant Stage Based on Additive Manufacturing Method for Testing Medical Specimens

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