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The Optimal Design of Multi-level Planetary Gear Reducer Jingbing WU, Lun SHU, Heming CHENG Mechanical and Electrical Engineering Wuhan University of Technology, Wuhan, China wjb@whut.edu.cn, shulun01@sina.com, 184961162@qq.com Key words: Multi-level planetary gear reducer, Load capacity, Transmission ratio, Optimal design Abstract.
And optimal allocated drive ratio is practically used in the drive of composite planetary gear reducer, successfully advancing the reducer and greatly improving its performance.
Peng: The Optimal Allocation of Multi-stage Planetary Gear Reducer Transmission Ratio, Technology Forum, (2008) No.9, pp.82-83.

Introduction Advances in XRD methods suggest that the technique is suitable for the non-destructive characterisation and testing of materials.
There are many other applications, where traditionally the control of the product or process does not require a non destructive approach in its strict sense, e.g. chemical industry, pharmaceutical technology, materials engineering.
Forum Vol. 228-231 (1996), p. 431 [6] G.

Conclusions The possibilities of utilizing the inertial systems are directly proportional to the advance in their development.
Kudláček et al., Technology forum 2011, Praha: ČVUT, Faculty of Mechanical Engineering (2011), 168 pp.

Czujko, Assessment of hydrocarbon explosion and fire risks in offshore installations: Recent advances and future trends, IES Journal Part A: Civil and Structural Engineering. 4 (2016) 167–179
Series: Materials Science and Engineering. 708 (2019) 012065
In Materials Science Forum.
In Materials Science Forum.

Information Security Forum) methods (FIRM, IRAM, SARA and SPRINT) are only available to members [1].
OCTAVE was developed within the Software Engineering Institute, part of Carnegie Mellon University (USA), by the Computer Emergency Response Team (CERT).
References [1] Information Security Forum (ISF).
Ionita, Current Established Risk Assessment Methodologies and Tools – Master Thesis - Faculty of Electrical Engineering, Mathematics and Computer Science (EEMCS) Department of Computer Science - Information Systems group – Universiteit Twente, 2013
Nedelcu, Risk assessment affecting organization performance, Advances in Economics, Law and Political Sciences, University of Braşov, 2014.

Franus, Mechanical and durability properties of concretes incorporating natural zeolite, Archives of Civil and Mechanical Engineering, 16 (2016), p.554-562
Key Engineering Materials. 761 (2018), p. 193-196
Modified plasters for restoration and finishing works /Advanced Materials Research, Vol. 923 (2014), p.42-47
Advanced Mater.
Rudenko, Shrinkage behavior of alkali-activated slag cement pastes, Key Engineering Materials, Switzerland, Vol. 761, 2018, pp. 45-48,

Effects of Al(OH)3 on the Structure and Properties of Foam Ceramics Cemented by Phosphate Caiyun JIA1,a , Rui DING 2,* Juncheng LIU3 , Anfa LIU4 and Dongxiao TENG5 1,2&3School of Materials Science and Engineering, Shandong University of Technology, Zibo Shandong 255049, China 4&5Gold Lion King Technology Ceramic Co.
Characterization The phase compositions of sintered specimen were analyzed with Germany D8 Advanced X-ray diffractometer (Cu Kα1 ray, voltage 40KV, step 0.02 degree).
Rare Metal Material and Engineering, 40 (2011) 345-348
The Fifth Pacific Rim International Conference on Advanced Materials and Processing [C].Switzerland: Materials Science Forum, (2004) 475-479: 1197
Rare Metal Material and Engineering, 3 (2005) 717-719

This investigation contributes valuable insights to developing advanced MMCs for high-performance engineering applications, demonstrating that the forging technique facilitates fine grain refinement, enhancing the abovementioned properties.
The study highlights the promising potential of hybrid composites in meeting the demands of advanced engineering applications for materials with better mechanical and tribological characteristics.
International Journal of Advanced Research in Engineering and Technology (IJARET), Vol.14(5), 1-13
Composites Part B: Engineering, 194, 108040
Advances in Materials Science and Engineering, 2022, 1-10

The Impact of Fly Ash and Sea Sand on Strength and Durability of Concrete Dahlia Patah1,a, Amry Dasar1,b*, Fakhruddin2,c, Balqis Shintarahayu3,d, Apriansyah1,e 1Department of Civil Engineering, Faculty of Engineering, Universitas Sulawesi Barat, Jalan Prof. 
Chen, "Effects of natural seawater and sea sand on the compressive behaviour of unconfined and carbon fibre-reinforced polymer-confined concrete," Advances in Structural Engineering, vol. 23, no. 14, p. 3102–3116, 2020
Dasar, "The Impact of using Rice Husks Ash, Seawater and Sea Sand on Corrosion of Reinforcing Bars in Concrete," Journal of the Civil Engineering Forum, pp. 251-262, September, 2023
Fang, "Development and mechanical behaviour of ultra-high highperformance," Advances in Structural Engineering, vol. 22, no. 14, p. 3100–3120, 2019
Xu, "Mechanical properties and environmental performance of seawater sea-sand self-compacting Concrete," Advances in Structural Engineering, vol. 25, no. 15, pp. 3114-3136, 2022

Introduction Increasing requirements on products performance and quality leads to new applications of advanced materials.
Advanced Aerospace Materials[M].
Rare Metal Materials and Engineering. 2008, 37(4):565~569 (In Chinese) [14] Ding Hongsheng, Chen Ruirun, Weisheng Bi, Jingjie Guo, Lin Liu, Hengzhi Fu.
Rare Metal Materials and Engineering. 2007, 36(7):1241~1244 (In Chinese) [15] Yanli Wang.
Dissertation for the Doctoral Degree in Engineering. 2007 (In Chinese) [16] Liang Luo.