Research of Product Design in Physically Processed Type Based on Bamboo Composite Characteristics

Being a natural composite material, bamboo’s biological anatomy structure, chemical components and particularities in mechanical properties have some influences on the processing and manufacturing of bamboo materials. Based on micromechanical analysis and the combination of structural features of its hollow type curved surface and cleavability, this paper discusses about the feasibility about extension design of bamboo pole as a whole for modeling elements, any possible varieties by vertical and horizontal segmentation for diversified combinational designs like enclosure and assembly; as well as rationality about designing products models in association with line-type materials after cleavage and separation. In the meantime, it presents difficulties in processing and utilization owing to bamboo material’s characteristics in geometric configurations such as small diameter, hollowness, multisections, thin wall and taperingness, and also its only longitudinal fibers.

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INVESTIGATION OF THE STRUCTURE AND MECHANICAL PROPERTIES OF A LAYERED COMPOSITE MATERIAL BY EXPLOSION WELDING

IZVESTIA VOLGOGRAD STATE TECHNICAL UNIVERSITY ◽

10.35211/1990-5297-2020-11-246-81-86 ◽

2020 ◽

pp. 81-86

Author(s):

A. Yu. Muizemnek ◽

D. V. Kozlov ◽

M. S. Gus’kov ◽

A. V. Khorin ◽

V. M. Batrashov ◽

...

Keyword(s):

Mechanical Properties ◽

Composite Material ◽

Structural Features ◽

Layered Composite ◽

Explosion Welding ◽

Layered Composite Material

The paper indicates the technological features of obtaining a composite of the Ti-Al system. Investigations on the study of structural features and mechanical properties of a composite material reinforced with intermetallic elements are presented.

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Fiber Orientation of Composite Materials - Effect on Mechanical Properties

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.880.273 ◽

2018 ◽

Vol 880 ◽

pp. 273-278

Author(s):

Mihaela Racila ◽

Jean Marie Crolet

Keyword(s):

Mechanical Properties ◽

Composite Material ◽

Fiber Orientation ◽

Mathematical Theory ◽

Numerical Approach ◽

The Finite Element Method ◽

Fibers Orientation ◽

Natural Composite ◽

Cortical Architecture ◽

Main Influence

Fiber orientation is essential when we want to predict the behavior of a composite material, also for determining the mechanical properties of such materials. Many researches in this field showed that the orientation of fibers has a major role, for example, in increasing some properties, or decreasing others. Some of these studies are experimental, some are made using only the Finite Element Method (FEM).In this work, we present a numerical approach in order to estimate the influence of the collagen fibers orientation on the mechanical properties of the natural composite, which is human cortical bone. Based on the mathematical theory of homogenization, allowing computing all the elastic (but also piezo and dielectric) properties of a composite material, this study quantifies the main influence of the fibers orientation and its effect on the mechanical properties, but also on the influence of the cortical architecture on mechanical properties.

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Tensile and Compressive Behaviours and Properties of a Bone Analogue Biomaterial

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.284-286.693 ◽

2005 ◽

Vol 284-286 ◽

pp. 693-696 ◽

Cited By ~ 1

Author(s):

Min Wang ◽

C.L. Au ◽

P.K. Lai ◽

William Bonfield

Keyword(s):

Mechanical Properties ◽

Composite Material ◽

Deformation Behaviour ◽

Compressive Modulus ◽

Tensile Fracture ◽

Compressive Yield Strength ◽

Compression Tests ◽

Bone Replacement ◽

Loading Modes ◽

Natural Composite

For the purpose of mimicking the structure and matching mechanical properties of human cortical bone, a natural composite material, hydroxyapatite (HA) reinforced high density polyethylene (HDPE) has been developed as a bioactive, analogue material for bone replacement. This synthetic composite material is now in clinical use. To understand the deformation behaviour and determine mechanical properties of HA/HDPE composite under different loading modes and loading conditions, tensile and compression tests were performed in the current investigation. It was observed that under tension, HA/HDPE composite exhibited two types of deformation behaviour: ductile and brittle. Under compression, the composite deformed in a ductile manner and did not fracture at high compressive strains. It was found that an increase in HA content resulted in increases in Young’s modulus, compressive modulus, tensile strength and compressive yield strength of the composite. A higher strain rate led to higher modulus and strength values and lower tensile fracture strains of the composite.

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A Model of Sheath of Bovine Horn Coupled Nano-Mechanical Properties and Microstructures

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.461.17 ◽

2013 ◽

Vol 461 ◽

pp. 17-21

Author(s):

Rui Qing Wang ◽

Xiao Hui Wang ◽

Yue Ming Wang ◽

Jiu Hao Gao ◽

Jin Tong ◽

...

Keyword(s):

Mechanical Properties ◽

Composite Material ◽

Qualitative Model ◽

Medical Apparatus ◽

Nanoindentation Testing ◽

Term Evolution ◽

Offensive Weapon ◽

Superior Mechanical Properties ◽

Natural Composite

With the long-term evolution, the bovine horn as the primary protective and offensive weapon has superior mechanical properties. The bovine horn consists of two parts, the keratinous horn sheath and the bony core. The keratinous is natural composite material with a highly toughness and can bear impact and repeated loads during fighting. It has a complex hierarchical microarchitecture. To establish the qualitative model for finding the possible relationship between structure and mechanical properties of bovine horn, in this paper, the model was established that based on the parameters provided by microstructure imaging and nanoindentation testing from transverse and longitudinal directions. Which would provide information useful for the developing bionic composite materials for micro-aircraft, bionic tribology, bionic medical apparatus and bionic organs (tissue engineering).

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Atomic structure of interface of intermetallic compound TiAl and nitride Ti2AIN using HREM and image processing

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100087161 ◽

1991 ◽

Vol 49 ◽

pp. 570-571

Author(s):

E. Sukedai ◽

H. Mabuchi ◽

H. Hashimoto ◽

Y. Nakayama

Keyword(s):

Mechanical Properties ◽

Image Processing ◽

Composite Material ◽

Intermetallic Compound ◽

Side Surface ◽

High Resolution Electron Microscopy ◽

Hexagonal Structure ◽

Second Phase ◽

Resolution Electron ◽

Compound Tial

In order to improve the mechanical properties of an intermetal1ic compound TiAl, a composite material of TiAl involving a second phase Ti2AIN was prepared by a new combustion reaction method. It is found that Ti2AIN (hexagonal structure) is a rod shape as shown in Fig.1 and its side surface is almost parallel to the basal plane, and this composite material has distinguished strength at elevated temperature and considerable toughness at room temperature comparing with TiAl single phase material. Since the property of the interface of composite materials has strong influences to their mechanical properties, the structure of the interface of intermetallic compound and nitride on the areas corresponding to 2, 3 and 4 as shown in Fig.1 was investigated using high resolution electron microscopy and image processing.

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THE INFLUENCE OF STRUCTURAL FEATURES OF COMPOSITE MATERIAL ON ITS MACROSCOPIC PROPERTIES

Nanomechanics Science and Technology An International Journal ◽

10.1615/nanomechanicsscitechnolintj.v5.i2.20 ◽

2014 ◽

Vol 5 (2) ◽

pp. 97-108

Author(s):

S. E. Evlampieva ◽

A. L. Svistkov

Keyword(s):

Composite Material ◽

Structural Features ◽

Macroscopic Properties

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Structural features and strength behavior of TRIP/TWIP steels

Perspektivnye Materialy ◽

10.30791/1028-978x-2020-9-5-18 ◽

2020 ◽

pp. 5-18

Author(s):

D. V. Prosvirnin ◽

◽

M. S. Larionov ◽

S. V. Pivovarchik ◽

A. G. Kolmakov ◽

...

Keyword(s):

Mechanical Properties ◽

Chemical Composition ◽

Thermomechanical Processing ◽

Maximum Load ◽

Structural Features ◽

Stacking Fault ◽

Stacking Fault Energy ◽

Structural And Functional Properties ◽

Twip Steels ◽

The Creation

A review of the literature data on the structural features of TRIP / TWIP steels, their relationship with mechanical properties and the relationship of strength parameters under static and cyclic loading was carried out. It is shown that the level of mechanical properties of such steels is determined by the chemical composition and processing technology (thermal and thermomechanical processing, hot and cold pressure treatment), aimed at achieving a favorable phase composition. At the atomic level, the most important factor is stacking fault energy, the level of which will be decisive in the formation of austenite twins and / or the formation of strain martensite. By selecting the chemical composition, it is possible to set the stacking fault energy corresponding to the necessary mechanical characteristics. In the case of cyclic loads, an important role is played by the strain rate and the maximum load during testing. So at high loading rates and a load approaching the yield strength under tension, the intensity of the twinning processes and the formation of martensite increases. It is shown that one of the relevant ways to further increase of the structural and functional properties of TRIP and TWIP steels is the creation of composite materials on their basis. At present, surface modification and coating, especially by ion-vacuum methods, can be considered the most promising direction for the creation of such composites.

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Factorial approach for multiple optimization of mechanical properties of alternative composite material for manufacture/repair flight surfaces (WING TIP - FAIRING ASSY)/CIDFAE

Materials Today Proceedings ◽

10.1016/j.matpr.2020.11.256 ◽

2021 ◽

Author(s):

Paredes Juan ◽

Silva Vinicio ◽

Vaca Henry ◽

Enríquez Víctor ◽

Arroba Cesar

Keyword(s):

Mechanical Properties ◽

Composite Material ◽

Factorial Approach ◽

Wing Tip

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Acoustic Emission and K-S Metric Entropy as Methods for Determining Mechanical Properties of Composite Materials

Sensors ◽

10.3390/s21010145 ◽

2020 ◽

Vol 21 (1) ◽

pp. 145

Author(s):

Lesław Kyzioł ◽

Katarzyna Panasiuk ◽

Grzegorz Hajdukiewicz ◽

Krzysztof Dudzik

Keyword(s):

Mechanical Properties ◽

Acoustic Emission ◽

Composite Material ◽

Composite Materials ◽

Testing Machine ◽

Measurement Data ◽

Entropy Method ◽

Displacement Sensor ◽

Metric Entropy ◽

Plastic Phase

Due to the unique properties of polymer composites, these materials are used in many industries, including shipbuilding (hulls of boats, yachts, motorboats, cutters, ship and cooling doors, pontoons and floats, torpedo tubes and missiles, protective shields, antenna masts, radar shields, and antennas, etc.). Modern measurement methods and tools allow to determine the properties of the composite material, already during its design. The article presents the use of the method of acoustic emission and Kolmogorov-Sinai (K-S) metric entropy to determine the mechanical properties of composites. The tested materials were polyester-glass laminate without additives and with a 10% content of polyester-glass waste. The changes taking place in the composite material during loading were visualized using a piezoelectric sensor used in the acoustic emission method. Thanks to the analysis of the RMS parameter (root mean square of the acoustic emission signal), it is possible to determine the range of stresses at which significant changes occur in the material in terms of its use as a construction material. In the K-S entropy method, an important measuring tool is the extensometer, namely the displacement sensor built into it. The results obtained during the static tensile test with the use of an extensometer allow them to be used to calculate the K-S metric entropy. Many materials, including composite materials, do not have a yield point. In principle, there are no methods for determining the transition of a material from elastic to plastic phase. The authors showed that, with the use of a modern testing machine and very high-quality instrumentation to record measurement data using the Kolmogorov-Sinai (K-S) metric entropy method and the acoustic emission (AE) method, it is possible to determine the material transition from elastic to plastic phase. Determining the yield strength of composite materials is extremely important information when designing a structure.

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