SEM Analysis of Kenaf Sandwich Panel

This study focus on the cross-sectional image of sandwich panel; the kenaf dispersion in core and the skin core interaction. Fracture image is the image outcome of flexural test. The main element of the core structure is kenaf and the skin used in this study is galvanised steel sheet. Skin thickness being used in this research is 1.0 mm and 1.2 mm.

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Flexural Properties of Kenaf Sandwich Panel

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.567.216 ◽

2012 ◽

Vol 567 ◽

pp. 216-219

Author(s):

Zahurin Halim ◽

Siti Khadijah Abdul Rahman

Keyword(s):

Mechanical Properties ◽

Steel Sheet ◽

Sandwich Panel ◽

Core Structure ◽

Main Element ◽

Flexural Properties ◽

Skin Thickness ◽

The Core ◽

Galvanised Steel

This study concerns on effect of varying skin thickness to flexural properties of sandwich panel. The main element of the core structure is kenaf and the skin used in this study is galvanised steel sheet. Skin thickness being used in this research is 1.0 mm and 1.2 mm. In this study, comparing sandwich of skin thickness 1.0 mm and 1.2 mm, result shows that 1.0 mm skin is sufficient as mechanical properties of sandwich decreases and density of sandwich increases as skin thickens.

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Effect of geometrical variations on the structural performance of shipping container panels: A parametric study towards a new alternative design

Curved and Layered Structures ◽

10.1515/cls-2021-0024 ◽

2021 ◽

Vol 8 (1) ◽

pp. 271-306

Author(s):

Ilham Widiyanto ◽

Faiz Haidar Ahmad Alwan ◽

Muhammad Arif Husni Mubarok ◽

Aditya Rio Prabowo ◽

Fajar Budi Laksono ◽

...

Keyword(s):

Sandwich Panel ◽

The Other ◽

Structural Performance ◽

Main Element ◽

The Finite Element Method ◽

The Core ◽

Shipping Container ◽

Corrugated Wall ◽

External Loads ◽

Static Simulation

Abstract In the field of logistics, containers are indispensable for shipments of large quantities of goods, particularly for exports and imports distributed by land, sea, or air. Therefore, a container must be able to withstand external loads so that goods can safely reach their destination. In this study, seven different models of container skins were developed: general honeycomb, cross honeycomb, square honeycomb, corrugated wall, flat, flat with a single stiffener, and flat with a cross stiffener. Testing was performed using the finite element method. In the static simulation, the best results were obtained by the model with corrugated walls. As the main element and the content of the sandwich panel structure, the core plays a role in increasing the ability of the structure to absorb force, thereby increasing the strength of the material. In the thermal simulation, the best results were obtained by the general honeycomb walls. Vibration simulations also showed that the square honeycomb design was better at absorbing vibration than the other models. Finally, the corrugated model had the best critical load value in the buckling simulation.

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Indexicality of Grammar: The Case of Japanese Transgender Speakers

The Oxford Handbook of Language and Sexuality ◽

10.1093/oxfordhb/9780190212926.013.16 ◽

2019 ◽

Author(s):

Hideko Abe

Keyword(s):

Gender Identity ◽

Gender Identity Disorder ◽

Grammatical Gender ◽

Core Structure ◽

Subject Positions ◽

Transgender Identity ◽

The Core ◽

History Of ◽

History Of Scholarship ◽

Grammatical Structures

This article discusses how the intersection of grammatical gender and social gender, entwined in the core structure of language, can be analyzed to understand the dynamic status of selfhood. After reviewing a history of scholarship that demonstrates this claim, the discussion analyzes the language practices of transgender individuals in Japan, where transgender identity is currently understood in terms of sei-dōitsusei-shōgai (gender identity disorder). Based on fieldwork conducted between 2011 and 2017, the analysis reveals how individuals identifying with sei-dōitsusei-shōgai negotiate subject positions by manipulating the specific indexical meanings attached to grammatical structures.

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The Relationship Between Career Adaptability and Job-Search Self-Efficacy of Graduates: The Bifactor Approach

Journal of Career Assessment ◽

10.1177/10690727211002281 ◽

2021 ◽

pp. 106907272110022

Author(s):

Marijana Matijaš ◽

Darja Maslić Seršić

Keyword(s):

Job Search ◽

Self Efficacy ◽

Cross Sectional Study ◽

Sem Analysis ◽

Bifactor Model ◽

Specific Factor ◽

General Factor ◽

Career Adaptability ◽

Cross Sectional ◽

Interview Performance

Career adaptability is an important resource for dealing with career transitions such as the transition from university to work. Previous research emphasized the importance of focusing on career adapt-abilities instead only on general career adaptability. The aim of this research was to investigate whether career adaptability can be conceptualized as a bifactor model and whether general and specific dimensions of career adaptability have a relationship with job-search self-efficacy of graduates. In an online cross-sectional study, 667 graduates completed the Career Adapt-Abilities Scale and Job Search Skill and Confidence Scale. The CFA analysis showed that the bifactor model of career adaptability had a good fit where general factor explained most of the items’ variance. The SEM analysis revealed that general career adaptability and the specific factor of confidence positively correlated with job-search and interview performance self-efficacy. Control only correlated with interview performance self-efficacy. Neither concern nor curiosity showed a significant relationship with job-search and interview performance self-efficacy.

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A numerical study of the impact perforation of sandwich panels with graded hollow sphere cores

Advances in Mechanical Engineering ◽

10.1177/16878140211009415 ◽

2021 ◽

Vol 13 (4) ◽

pp. 168781402110094

Author(s):

Ibrahim Elnasri ◽

Han Zhao

Keyword(s):

Boundary Conditions ◽

Hollow Sphere ◽

Sandwich Panel ◽

Numerical Study ◽

Sandwich Panels ◽

Hopkinson Bar ◽

Core Density ◽

The Core ◽

The Impact ◽

Force Displacement

In this study, we numerically investigate the impact perforation of sandwich panels made of 0.8 mm 2024-T3 aluminum alloy skin sheets and graded polymeric hollow sphere cores with four different gradient profiles. A suitable numerical model was conducted using the LS-DYNA code, calibrated with an inverse perforation test, instrumented with a Hopkinson bar, and validated using experimental data from the literature. Moreover, the effects of quasi-static loading, landing rates, and boundary conditions on the perforation resistance of the studied graded core sandwich panels were discussed. The simulation results showed that the piercing force–displacement response of the graded core sandwich panels is affected by the core density gradient profiles. Besides, the energy absorption capability can be effectively enhanced by modifying the arrangement of the core layers with unclumping boundary conditions in the graded core sandwich panel, which is rather too hard to achieve with clumping boundary conditions.

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Solvent-free and efficient synthesis of bicyclic 2-pyridone derivatives for endoplasmic reticulum imaging

Organic Chemistry Frontiers ◽

10.1039/d1qo00350j ◽

2021 ◽

Author(s):

Xiaoyun Ran ◽

Qian Zhou ◽

Jin Zhang ◽

Shanqiang Wang ◽

Gui Wang ◽

...

Keyword(s):

Endoplasmic Reticulum ◽

Citric Acid ◽

Core Structure ◽

Solvent Free ◽

Efficient Synthesis ◽

The Core ◽

Catalyst Free ◽

Synthesis Approach ◽

Ethylenediamine Derivatives

Started from citric acid (CA) and ethylenediamine derivatives, a solvent-free, catalyst-free and highly yield synthesis approach for bicyclic 2-pyridones was presented. Continuing to modify the core structure, a series of...

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