- Research Article
4
- 10.1016/j.polymertesting.2025.108974
Round-robin programme for longitudinal tensile testing of unidirectional composites: results, conclusions, and recommendations
- Nov 01, 2025
- Polymer Testing
- Babak Fazlali + 14 more +14
Publications from 2021 to 2026
Showing 10 of 33 papers
Round-robin programme for longitudinal tensile testing of unidirectional composites: results, conclusions, and recommendations
Intertekstualność w badaniach biblijnych
Dokument Papieskiej Komisji Biblijnej Interpretacja Biblii w Kościele 2 wymienia kilka metod stosowanych w badaniach biblijnych, m.in.historyczno-krytyczną, retoryczną, narracyjną i semiotyczną, a także różne podejścia.Współcześnie pojawiają się próby stosowania w analizie tekstów biblijnych metody intertekstualnej, a przynajmniej jej pewnych elementów.Metoda ta oparta jest na zjawisku intertekstualności, identyfikowanym i stosowanym współcześnie w wielu badaniach
Read morePROPOSAL OF MECHANICAL MODEL FOR ESTIMATION OF RELATIONSHIP BETWEEN BEARING CAPACITY AND DEFORMATION OF MUD WALL BASED ON SOIL MECHANICS
In order to grasp the relationship between bearing capacity and deformation of mud walls, full-scale tests that require considerable economical and time investments are needed. Therefore, we have studied on the estimation formula for the relationship between bearing capacity and deformation of mud walls without openings based on soil mechanics. The objective of this study is to estimate the relationship between bearing capacity and deformation of mud walls with opening by the mechanical characteristics of wall clay obtained from the results of material tests. In order to grasp the fracture mode of mud walls with opening, full-scale lateral loading tests for specimens with hanging walls and siding walls are conducted. As shown in Figure 1, the length and height of specimens are 3640mm and 2767.5mm, respectively. Total 4 specimens are selected to examine the effect of reinforcement at the connection of column-to-lintel. The maximum load of specimen with reinforcement is almost same as that of specimen without reinforcement. However, the deformation angle at maximum load of specimen with reinforcement is smaller than that of specimen without reinforcement owing to the effect of reinforcement at the connection of column-to-lintel. Regarding the fracture mode, the hanging walls and siding walls are collapsed with initial failure in compression or pull-out of lintel and compression. The mechanical model to estimate the relationship between bearing capacity and deformation of mud walls with opening is proposed based on soil mechanics. The material characteristics of wall clay is determined from the results of unconfined compression tests as shown in Figure 4. The relationship between bearing capacity and deformation of the hanging and siding wall is estimated considering two types of fracture mode with initial failure in compression and pull-out of lintel and compression. As a result, the relationship between bearing capacity and deformation of mud walls with opening is estimated considering the deformation of columns, hanging walls and siding walls as shown in Figure 10. The estimation results are compared with the experiment results to evaluate the accuracy of the proposed method. The estimation results are almost the same as the experiment results. However, there are some variations between estimation and experiment results owing to the simple mechanical model. The average value of the ratio of the experiment value Peu to the estimation value Pcu is 1.08, and the variation coefficient is 0.08 as shown in Figure 18. Therefore, it is found that the proposed method is available for mud walls with opening.
Read more110 限界状態曲面上に初期値を定めるRF法に基づく設計点探索法の研究 : 設計点情報を用いたシミュレーションに基づく構造信頼性解析法(GS1,3 材料力学(1),研究討論セッション)
This study describes an efficient application of Rackwitz Fiessler algorithm to search out all of design points, utilized in the multimodal importance sampling simulation to estimate structural failure probabilities. The initial points to execute Rackwitz Fiessler algorithm are proposed to set in the respective quadrants of the basic random variable space and all of possible design points are determined. Numerical examples to estimate the failure probability of structural system with multiple and nonlinear limit state function by using multimodal importance sampling using all of design points determined are presented to illustrate that the proposed method gives accurate estimations effectively.
Read moreJ0260204 クロマグロの遊泳能力解析と魚ロボットへの応用
The swimming motion of Tuna type fishes has excellent ability for its speed and efficiency. In the former studies, we made 1/1 scale model of Blue Fin Tuna body and caudal fin. The body resistance in the water flow are measured, and the lift and drag force of caudal fin are also measured. By using these data, we developed swimming mechanism and mounted on float, This paper shows a performance comparison between Tuna type caudal fin and Rectangular caudal fin.
Read moreJ0570303 抵抗低減界面活性剤水溶液流れの乱流遷移に及ぼすミセル構造の影響([J057-03]乱流における運動量,熱,物質の輸送現象(3))
In general, the drag-reducing effect in a pipe by a surfactant additive is caused by rod-like micelles in the surfactant solution. This paper describes the results of experiments to determine the relationship between the amount of micelles in the surfactant solution and the turbulent transition process in a pipe flow. In the experiment, a fluorescence probe was used to examine the amount of micelles in the drag-reducing surfactant solution flow. Pyrene-1-carboxaldehyde was used as the fluorescence probe, and TTAB was used as the drag-reducing surfactant solution. The experimental results are as follows. The critical micelle concentration of the drag-reducing surfactant solution containing pyrene-1-carboxaldehyde was about 250 ppm. When the drag-reducing surfactant solution was irradiated with ultraviolet light, the fluorescence intensity at the wavelength of 487 nm changed with the surfactant concentration. At 300 ppm, the fluorescence intensity of the surfactant solution increased with the turbulent transition. That is, the amount of micelles in the surfactant solution began to decrease with the turbulent transition. The experimental results of this study suggest that micelles cause a drag-reducing effect in a surfactant solution.
Read moreSyntheses, Characterization, and Antitumor Activities of Platinum(II) and Palladium(II) Complexes with Sugar‐Conjugated Triazole Ligands
Four platinum(II) and palladium(II) complexes with sugar-conjugated bipyridine-type triazole ligands, [Pt(II)Cl(2)(AcGlc-pyta)] (3), [Pd(II)Cl(2)(AcGlc-pyta)] (4), [Pt(II)Cl(2)(Glc-pyta)] (5), and [Pd(II)Cl(2)(Glc-pyta)] (6), were prepared and characterized by mass spectrometry, elemental analysis, (1)H- and (13)C-NMR, IR as well as UV/VIS spectroscopy, where AcGlc-pyta and Glc-pyta denote 2-[4-(pyridin-2-yl)-1H-1,2,3-triazol-1-yl]ethyl 2,3,4,6-tetra-O-acetyl-β-D-glucopyranoside (1) and 2-[4-(pyridin-2-yl)-1H-1,2,3-triazol-1-yl]ethyl β-D-glucopyranoside (2), respectively. The solid-state structure of complex 6 was determined by single-crystal X-ray-diffraction analysis. These complexes exhibited in vitro cytotoxicity against human cervix tumor cells (HeLa) though weaker than that of cisplatin.
Read moreDEM Simulation of Autogenous Grinding Process in a Tumbling Mill
We have investigated on size reduction process in an autogenous (AG) grinding a solid in a tumbling mill with 12.1 cm in inner diameter and 14.7 cm in length. The model solid samples were two kinds of cubic shaped sugar particles, having 15 mm x 15 mm x 15 mm. The size reduction process of these samples was monitored by using DEM simulation as well as the experiment, both of which were conducted in ambient condition. As a result, the motion of the samples simulated has been shown by surface grinding model, and this grinding behavior explains fairly well the phenomena observed by the experiment. The fine particle production ratio observed by the experiment is in agreement quantitatively with that shown by the DEM simulation. Consequently, we have confirmed that the AG grinding process of the solid samples in the mill can be promoted by surface grinding under the present condition.
Read more616 指標関数を含む重点サンプリング法に基づく構造破損確率の推定法 : 最適重点サンプリング周辺確率密度の構築法(GS-3 応力設計)
552 熱可塑性樹脂のレーザ溶着における接合条件の主応力方向への影響(GS 加工)