The purpose of this study was to design a light-weight sandwich panel for trailers. Strength calculations and selection different materials were carried out in order find new solution specific application. fabricated using vacuum infusion technology. types composite panels tested 4-point bending conditions according ASTM C393/C393M. Virtual testing performed by use ANSYS software simplify the core material process layers. 2D Finite element analysis (FEA) made with APDL (Classic) software....

This study investigated the effect of hemp fiber pretreatments (water and sodium hydroxide) combined with silane treatment, first on properties (microscale) then polylactide (PLA) composite (macroscale). At microscale, Fourier transform infrared, thermogravimetric analysis, scanning electron microscopy investigations highlighted structural alterations in fibers, removal targeted components rearrangement cell wall. These changes influenced unitary properties. macroscale, both increased...

Glass fibre reinforced plastic (GFRP) scrap consisted of acrylic with glass reinforcement in polyester resin matrix was used our experiments. The multi-functional DS-series disintegrator mills were for mechanical processing GFRP scrap. Preceding from the results characterization milled powder particles size, shape and other properties numerical algorithm modelling density new filler material developed. main goal current study is to develop particulate filled composite recycled With recovered...

In this paper cracking resistance and fatigue properties of five hard coatings-TiN, TiCN, TiAlN, AlTiN nanocomposite nc-AlTiN/a-Si3N4 (nACo®) on tool steels Weartec(superscript TM) Vanadis 6 are evaluated by means the cyclic Vickers indentation method. The analytical part covers an evaluation damage evolution coated system versus number cycles. comparative adhesion testing was conducted with use Rockwell C technique. It found that type cracks formed in systems under loading depends Young...

Tungsten carbide based hardmetal containing sprayed and melted composite hardfacings are prospective for protection against abrasive wear. For selection of wear resistant under intensive impact conditions, both mechanical properties (hardness, fracture toughness, etc.) conditions (type abrasive, velocity, should be considered.

In the current study, cracking, impact and sliding wear resistance of PVD single layer TiN (I generation), multilayer (Ti,Al)N-ML (II gradient (Al,Ti)N-G nanocomposite FiVIc® (both – III generation) coatings on nitrided low alloy steel 42CrMo4 are analysed. The cyclic indentation test (normal load 50 N, 10 000 cycles) was carried out to determine cracking coatings. Impact performed at normal 16 strokes' frequency 25 Hz, 104 107 strokes. Sliding applied, using block-on-plate scheme, Ø mm...

Present study focuses on investigating the hot dip galvanizing effect mechanical properties of high strength steel. The chemical pre-treatment (hydrogen diffusion) and temperature was studied with steel S650MC. Additional tests were made widely used structural S355J2. A batch type process zinc bath 450 °C 550 °C. Results show behaviour during process.

The mechanical and physical properties relationship from atomic level strain/stress causes dislocation density electrical conductivity relationship, as well crystallites deformation hkl-parameter change in the severely deformed pure refractory rare metal Nb at ambient temperature during short processing times. above mentioned issues are discussed this study. For ultrafine-grained nanocrystalline microstructure forming equal-channel angular pressing hard cyclic viscoplastic were used. flat...

In the automotive industry, heat treatment of strip steel safety components is a crucial and highly responsible process in terms quality. The growing demand for passenger car makes important qualified engineering. This study focused on part austenitization industrial furnace. includes testing with laboratory furnace an test continuous austempering line. purpose this work to find basis selecting optimal parameters line without affecting final quality treated parts. For study, belt tongue, as...

The structurization of a high purity niobium from double electron-beam melted cast microstructure to fine-grained was completed by equal-channel angular pressing the Bc route up Von Mieses strain 13.8. In addition, for viscoplastic behavior study as well nanostructure and properties improving hard cyclic deformation, die forging at room temperature followed heat treatment with low heating rate were conducted. processed samples characterized transmission electron microscopy X-ray diffraction...

In this paper cracking resistance and fatigue properties of five hard coatings - TiN, TiCN, TiAlN, AlTiN nanocomposite nACo® (nc-AlTiN/a-Si3N4) on tool steels Weartec™ Vanadis 6 are evaluated by means the cyclic Vickers indentation method. The analytical part covers an evaluation damage evolution coated system versus number cycles. effect mechanical response Young's module/Hardness ratio (E/H ratio) crack propagation is described in form a diagram with various curves, each one associated...

Heat treatment is widely used for high reliability fastening components such as buckles and brackets. The current study focuses on mass production of safety which are fineblanked from sheet metal, austempered chromium electroplated. Electroplating together with stamping defects may lead to unexpected brittle failure the component. It known that during austenitisation, decarburisation could avoid and, therefore, slight recommended. There little information how much influenced by where limits...

Physical Vapour Deposited (PVD) coatings are used in wide range of industrial applications where requirements differ. For example, cutting adhesive-abrasive wear along with high contact stresses prevail and PVD coating thickness ~2 μm used. In forming adhesive usually dominates relatively thick (~5 μm) preferred. both the subjected to cyclic stress therefore it is a point interest learn behaviour different under loading. Cracking resistance fatigue properties gradient TiCN on hard metal...