Super Twisting Disturbance Observer-Based Fixed-Time Sliding Mode Backstepping Control for Air-Breathing Hypersonic Vehicle by Yunjie Wu, Fei Ma, Xiaocen Liu, Yueyang Hua, Xiaodong Liu, Guofei Li

“…Simulation results demonstrate the effectiveness of the composite method.…”
Get full text

Adaptive Robust Dynamic Surface Integral Sliding Mode Control for Quadrotor UAVs under Parametric Uncertainties and External Disturbances by Ye Zhang, Ning Xu, Guoqiang Zhu, Lingfang Sun, Shengxian Cao, Xiuyu Zhang

“…The main contributions of the proposed ADSISMC strategy are as follows: (1) The combination of dynamic surface and integral sliding mode makes the system always in sliding stage by finding the appropriate initial position compared with the common sliding mode, and the complexity of explosion in backstepping method is eliminated. (2) By introducing the fuzzy system, the unknown functions and uncertainties can be approximated which significantly improves the robustness and the tracking performance. (3) The switching control strategy is utilized to compensate for the errors between estimated and ideal inputs; the tracking performance of the whole system has been significantly improved. …”
Get full text

Nonsingular Global Fast Terminal Sliding Mode Control with Extended State Observer for Contact Force Regulation in Aerial Manipulator by Lirui Shen, Pengjun Mao, Qian Fang, Jun Wang

“…Combined with the disturbance estimation and the nonsingular global fast sliding mode algorithm, a controller derived from the Lyapunov theory is proposed. …”
Get full text

Standard deviation as a suitable criterion for localizing damages in Nano- composite structures by Alireza Gholipour, Morteza Saadatmorad, Mohammad Hassan Shahavi

“… Wavelet transform is a proper method for detecting damages in signals such as vibration mode shapes. …”
Get full text

Influencing the damage process and failure behaviour of polymer composites – A short review by Gergő Zsolt Marton, Gábor Szebényi

“…These methods can also simplify structural health monitoring, which has great importance in several applications of composite materials. …”
Get full text

Methods Used in Forensic Linguistic Analysis by O. V. Kukushkina

“…The methods of investigation which an expert linguist has been no real indication of the mode of its actions, and the inventory of possible means of expression values and aspects of their analysis are described. …”
Get full text

Research and Development of the Composition and Technology Receving of Granules of Omeprazol in the Fluid Bed Apparatus by N. V. Mazova, A. L. Marchenko, I. E. Smehova

Get full text

Effects of varying loading rates on the Brazilian splitting characteristics of coal-rock composites by CHEN Yan, WANG Jiahao, DENG Liangtao, HONG Zijie, RONG Tenglong, HOU Zhiqiang

“…ObjectivesTo investigate the tensile characteristics of coal-rock composite structures during the mining process， the study takes coal-rock composite specimens as the research object.MethodsBrazilian splitting tests were conducted on coal-rock composite specimens under varying loading rates using the RMT150B testing machine. …”
Get full text

Superposition, Composition and Separation of Casing Wave and P Wave of Formation in Cased Hole by SHEN Yongjin, SU Yuanda, SHEN Jianguo

Get full text

Research on Aircraft Control System Fault Risk Assessment Based on Composite Framework by Tongyu Shi, Yi Gao, Long Xu, Yantao Wang

“…Although traditional methods such as Failure Mode, Effects, and Criticality Analysis (FMECA) and Fault Tree Analysis (FTA) can reflect the degree of fault risk to a certain extent, they cannot accurately quantify and evaluate the fault risk under the multiple influences of human factors, random faults, and external environment. …”
Get full text

APPLICABILITY INVESTIGATION OF FAILURE CRITERION FOR POST-BUCKLING ANALYSIS OF STIFFENED COMPOSITE PANELS by LIN GuoWei, LI XinXiang

“…The validity of analysis method is proved. Five different failure criterions are adopted respectively in the FEM analysis and damage loads as well as failure modes is obtained. …”
Get full text

Modeling the Buckling Characteristics of Pineapple Leaf Fibre Reinforced Laminated Epoxy Composites by Partha Borah, Satadru Kashyap, Sanjib Banerjee, Sushen Kirtania

“…The elastic parameters were calculated analytically, whereas the buckling studies were carried out using the finite element method. Buckling was shown to be significantly influenced by the changes in volume fractions, plate aspect ratio, and buckling mode. …”
Get full text

Domestication of medicinal plants (Lonicera japonica Thunb.) in China: comparison of morphological, resistance and biochemical traits between wild and cultivated populations by Congzhe Hou, Luyao Huang, Zhuangzhuang Li, Nan Sun, Sheng Yang, Jia Li, Zhenhua Liu

“…Therefore, this study aims to compare and analyze differences in morphology, resistance, and biochemical composition between wild and cultivated varieties.MethodsA total of 36 wild and 81 cultivated specimens were examined to compare plant morphology, flowering time, bud length, active ingredients, and resistance between wild and cultivated populations.ResultsThe cultivated honeysuckle exhibited several noteworthy characteristics, including more erect plant morphology, higher flower-to-leaf ratio, more obvious aggregation of flowers into clusters at the top of branches, higher frequency of flowering, and longer bud length compared to the wild type. …”
Get full text

Weakening Detection of Composite Structure Adhesive Layer Based on Nonlinear Guided Waves by Fanqiang Bu, Wencong Wei, Xingguo Wang, Xiaogao Li, Guolang Shen, Chengwen Ma, Guoxing Tang

“…In this study, a detection method utilizing nonlinear ultrasonic guided waves is presented to tackle the difficulties in detecting localized damage and weakening in bonded composite structures. …”
Get full text

RÉCIT AUTOBIOGRAPHIQUE / ÉTUDE GÉNÉTIQUE; MODE D’EMPLOI : LE CAS DE L’ENFANT NOIR DE CAMARA LAYE by AZIBI Arezki

Get full text

Model-Free Adaptive Fast Integral Terminal Sliding Mode Control for Permanent Magnet Synchronous Motor with Position Error Constraint by Xingyu Qu, Shuang Zhang, Chengkun Peng

“…To address these challenges, this paper proposes a prescribed performance model-free adaptive fast integral terminal sliding mode control (PP-MFA-FITSMC) method. This approach replaces conventional techniques such as parameter identification, function approximation, and model reduction, offering advantages such as quantitative constraints on the PMSM tracking error, reduced chattering, strong disturbance rejection, and ease of engineering implementation. …”
Get full text

Formation of surface layer quality under abrasive treatment of polymer-composite materials by M. A. Tamarkin, Eh. Eh. Tishchenko, A. V. Verchenko, V. M. Troitskii

“…The stages of preparation of a part made of polymer-composite material for the “glueing” operation are investigated.Materials and Methods. …”
Get full text

Application of Quality-by-Design Approach to Justify the Composition and Technology of Two-component Suppositories by I. E. Smekhova, L. V. Shigarova, P. I. Andreeva, E. V. Flisyuk, A. S. Dzyuba

“…Objects of study: chlorhexidine bigluconate, dexpanthenol, PEG-400 and PEG-1500, pharmaceutical development documents. Methods of study: content analysis, system analysis; FMECA method (Failure Modes, Effects and Criticality Analysis).Results and discussion. …”
Get full text

Experimental and Analytical Study on the Flexural Performance of Layered ECC–Concrete Composite Beams by Chong Gui, Jinlong Ji, Chongfa Xu, Zhihua Li, Xuan Guo

“…Furthermore, practical and simplified methods were introduced to predict flexural bearing capacity and effective moment of inertia, as well as anticipate failure modes, offering a user-friendly approach for engineering applications. …”
Get full text

Experimental study on the shear strength of partially-encased composite beams with corrugated webs by Liusheng Chu, Jingjing Zhao, Yuexi He, Jie Li, Yukun Yang

“…The partially-encased composite beam with a corrugated web (CWPEC) is an improved composite member, which combines the respective advantages of traditional partially-encased composite beams and corrugated web beams. …”
Get full text