scholarly journals The Durability and Performance Test methods of the New Type of Pavement Filling Material - An Holistic Review

2019 ◽  
Vol 304 ◽  
pp. 052123
Author(s):  
Gaojie Liu ◽  
Erlei Bai ◽  
Jinyu Xu ◽  
Tengjiao Wang ◽  
Sen Chang
Keyword(s):  
Performance Test ◽  
Test Methods ◽  
Filling Material ◽  
Holistic Review ◽  
New Type ◽  
And Performance

scholarly journals The preparation and performance test of a new type of water-absorbent resin dust suppressant with cation

2018 ◽  
Vol 199 ◽  
pp. 032085
Author(s):  
Yue Sun ◽  
Xianfeng Zhu ◽  
Hai Yuan ◽  
Yuling Qu ◽  
Junming Huang ◽  
...  
Keyword(s):  
Performance Test ◽  
New Type ◽  
And Performance

scholarly journals Fabrication and Characterization of Friction Stir-Processed Mg-Zn-Ca Biomaterials Strengthened with MgO Particles

2021 ◽  
Author(s):  
Zhen Liu ◽  
Yangchuan Cai ◽  
Jie Chen ◽  
Jian Han ◽  
Zhiyong Mao ◽  
...  
Keyword(s):  
Grain Refinement ◽  
Performance Test ◽  
Rotational Velocity ◽  
Casting Process ◽  
Test Methods ◽  
The Novel ◽  
Friction Stir ◽  
And Performance ◽  
Particle Strengthening

Abstract Magnesium alloy composites play an important role in biomaterials field. In this study, a novel Mg-Zn-Ca matrix composite was reinforced by adding 1.0 wt.% MgO nanoparticles via the high shear casting process. Hereafter, friction stir processing (FSP) was used to achieve a good dispersion of MgO particles and improve the mechanical properties of the composites. After the preparation of the novel composite materials, varied characterization and performance test methods have been selected for comparison. The results illustrate that through FSP, the corresponding microstructure and properties of as-cast MgO/Mg-Zn-Ca composites were significantly modified, and the best combination of the key parameters is 1200 rpm and 60 mm/min for rotational velocity and traveling speed, respectively. After the optimized FSP treatment, the grains size in FSP-processed composites were refined by 42%, to reach 1.04 μm. Due to the grain refinement and the redistribution of MgO particles, the hardness of the FSP-processed MgO/Mg-Zn-Ca composites were increased by 40%, to reach 101.2 HV. Further, it displayed excellent corrosion resistance as well as strength. Compared to the strengthening through grain refinement, the particle strengthening is more dominant based on the study. And meanwhile, the modified grains and added MgO particles are beneficial to the properties of the nugget zones.

Purification Mechanism Analysis and performance Characterization of Mn-zeolite Catalyst

2016 ◽  
Vol 19 (1) ◽  
Author(s):  
Tianxin Li ◽  
Xin Zhang ◽  
Shiling Wu ◽  
Linglong Meng ◽  
Harrison Odion Ikhumhen
Keyword(s):  
Catalytic Mechanism ◽  
Zeolite Catalyst ◽  
Test Methods ◽  
Mechanism Analysis ◽  
Medium Temperature ◽  
Ozone Oxidation ◽  
Heterogeneous Catalytic ◽  
The Matrix ◽  
New Type ◽  
And Performance

AbstractIn this study, the clinoptilolite is taken as the matrix, manganese nitrate as a modifier; through a medium temperature calcination pore making technique. Mostly, the micro pores in the matrix have been enlarged through the means of dipping and high temperature calcination modification. A small amount of active catalytic components are exchanged stably between the pores and surface. The mechanism of manufacturing new catalyst is analyzed using test methods of TEM, SEM, EDS, XRD and BET. These test methods testify the existence of active catalytic components of manganese in the Mn-Zeolite, while researching a new type of Mn-zeolite catalyst heterogeneous catalytic mechanism of Fenton and ozone oxidation process. The results show that added Mn-zeolite could improve the oxidation rate from 51% to 100%. Addition of free radical inhibitor, t-butanol, significantly inhibited the catalytic reaction of Fenton and ozone oxidation. This indicated that the mechanism of the reaction of Fenton and ozonation followed the hydroxyl radical.

Manufacture and Performance Test of New Type MR Damper

2012 ◽  
Vol 256-259 ◽  
pp. 2771-2774
Author(s):  
Song Jian Sun
Keyword(s):  
Small Proportion ◽  
High Frequency ◽  
Performance Test ◽  
Mr Damper ◽  
Hysteresis Curve ◽  
Damping Force ◽  
Hydraulic Servo ◽  
New Type ◽  
Hydraulic Servo System ◽  
And Performance

A new type of small proportion double rod structure magnetorheological(MR) damper was manufactured in this article, and the damper performance test was taken on electro-hydraulic servo system. The results indicate that the damper is not only able to provide a large damping force, but also its adjustable coefficient is high. And the hysteresis curve is still good in a high-frequency vibration, so it has a good stability.

Rancang Bangun Alat Olahan Minyak Kelapa

2016 ◽  
Vol 10 (1) ◽  
pp. 70-77
Author(s):  
Jantri Sirait ◽  
Sulharman Sulharman
Keyword(s):  
Electric Motor ◽  
Performance Test ◽  
Production Capacity ◽  
Coconut Oil ◽  
Heating Time ◽  
Design Tool ◽  
Coconut Milk ◽  
Heating Process ◽  
And Performance ◽  
Time Required

Has done design tool is a tool of refined coconut oil coconut grater, squeezer coconut milk and coconut oil heating, with the aim to streamline the time of making coconut oil and coconut oil increase production capacity. The research method consists of several stages, among others; image creation tool, procurement of materials research, cutting the material - the material framework of tools and performance test tools. The parameters observed during the performance test tools is time grated coconut, coconut milk bleeder capacity, the capacity of the boiler and the heating time of coconut oil. The design tool consists of three parts, namely a tool shaved coconut, coconut milk wringer and coconut milk heating devices. Materials used for the framework of such tools include iron UNP 6 meters long, 7.5 cm wide, 4 mm thick, while the motor uses an electric motor 0.25 HP 1430 rpm and to dampen the rotation electric motor rotation used gearbox with a ratio of round 1 : 60. the results of the design ie the time required for coconut menyerut average of 297 seconds, coconut milk wringer capacity of 5 kg of processes and using gauze pads to filter coconut pulp, as well as the heating process takes ± 2 hours with a capacity of 80 kg , The benefits of coconut oil refined tools are stripping time or split brief coconut average - average 7 seconds and coconut shell can be used as craft materials, processes extortion coconut milk quickly so the production capacity increased and the stirring process coconut oil mechanically.ABSTRAKTelah dilakukan rancang bangun alat olahan minyak kelapa yaitu alat pemarut kelapa, pemeras santan kelapa dan pemanas minyak kelapa, dengan tujuan untuk mengefisiensikan waktu pembuatan minyak kelapa serta meningkatkan kapasitas produksi minyak kelapa. Metode penelitian terdiri dari beberapa tahapan antara lain; pembuatan gambar alat, pengadaan bahan-bahan penelitian, pemotongan bahan - bahan rangka alat dan uji unjuk kerja alat. Parameter yang diamati pada saat uji unjuk kerja alat adalah waktu parut kelapa, kapasitas pemeras santan kelapa, kapasitas tungku pemanas serta waktu pemanasan minyak kelapa. Rancangan alat terdiri dari tiga bagian yaitu alat penyerut kelapa, alat pemeras santan kelapa dan alat pemanas santan kelapa. Bahan yang dipergunakan untuk rangka alat tersebut  yaitu besi UNP panjang 6 meter, lebar 7,5 cm, tebal 4 mm, sedangkan untuk motor penggerak menggunakan motor listrik 0,25 HP 1430 rpm dan untuk meredam putaran putaran motor listrik dipergunakan gearbox  dengan perbandingan putaran 1 : 60. Hasil dari rancangan tersebut yaitu waktu yang dibutuhkan untuk menyerut kelapa rata-rata 297 detik, kapasitas alat pemeras santan kelapa 5 kg sekali proses dan menggunakan kain kassa untuk menyaring ampas kelapa, serta Proses pemanasan membutuhkan waktu ± 2 jam dengan kapasitas 80 kg. Adapun keunggulan alat olahan minyak kelapa ini adalah waktu pengupasan atau belah kelapa singkat rata – rata 7 detik dan tempurung kelapa dapat digunakan sebagai bahan kerajinan, proses pemerasan santan kelapa cepat sehingga kapasitas produksi meningkat dan proses pengadukan minyak kelapa secara mekanis. Kata kunci : penyerut, pemeras, pemanas,minyak kelapa,olahan minyak kelapa.

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