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Online since: September 2023
Authors: Ronald Allan S. delos Reyes, Jonah Alyssa Montuya, Danah Patrice Higa, Niera Umantod
Introduction
Eggshell powder, having cementitious properties due to the presence of calcium oxide, have been investigated by researchers as a possible material of construction [1,2,3].
Their observations have shown that PET-ash composite tiles can be a viable option in terms of the desired properties.
The tiles were then left to dry for 72 hours before mechanical strength testing.
Yield % vs. the proposed Interstitial Dynamic Spacing – IDS As can be deduced, the mode of breakage (impact, chipping or attrition) is influenced by a number of factors.
After the curing period, the tiles were tested for its mechanical strength shown in Fig. 4.
Their observations have shown that PET-ash composite tiles can be a viable option in terms of the desired properties.
The tiles were then left to dry for 72 hours before mechanical strength testing.
Yield % vs. the proposed Interstitial Dynamic Spacing – IDS As can be deduced, the mode of breakage (impact, chipping or attrition) is influenced by a number of factors.
After the curing period, the tiles were tested for its mechanical strength shown in Fig. 4.
Online since: October 2015
Authors: Zainal Arifin Ahmad, Otman M.M. Elbasir, Megat Azmi Megat Johari
This study is also expected to contribute towards the development of cost efficient alkali activated binder that will result in a good mechanical property which majorly depends on the compressive strength.
The chemical and physical properties of the UPOFA in this study are provided in Table 1 and Table 2, respectively.
An overview on the influence of various factors on the properties of geopolymer concrete derived from industrial by-products.
Synthesis of geopolymer from large amounts of treated palm oil fuel ash: Application of the Taguchi method in investigating the main parameters affecting compressive strength.
Engineering and transport properties of high-strength green concrete containing high volume of ultrafine palm oil fuel ash.
The chemical and physical properties of the UPOFA in this study are provided in Table 1 and Table 2, respectively.
An overview on the influence of various factors on the properties of geopolymer concrete derived from industrial by-products.
Synthesis of geopolymer from large amounts of treated palm oil fuel ash: Application of the Taguchi method in investigating the main parameters affecting compressive strength.
Engineering and transport properties of high-strength green concrete containing high volume of ultrafine palm oil fuel ash.
Online since: July 2003
Authors: S.A. Neild, P.D. McFadden, M.S. Williams
Almost all of this work to date has assumed that the modal properties of
the bridge do not vary with amplitude of oscillation (i.e. the vibration is linear).
Eccles et al. [7] conducted experiments on a series 2 Title of Publication (to be inserted by the publisher) of concrete beams to examine the non-linear amplitude-dependent modal properties of the beams.
The drawback with using time-frequency relationships to assess changes in non-linearity with damage is that damage affects damping properties [2].
Severn: Assessing the dynamic properties of prototype structures by hammer testing.
Aves: Impact factors for simple concrete bridges.
Eccles et al. [7] conducted experiments on a series 2 Title of Publication (to be inserted by the publisher) of concrete beams to examine the non-linear amplitude-dependent modal properties of the beams.
The drawback with using time-frequency relationships to assess changes in non-linearity with damage is that damage affects damping properties [2].
Severn: Assessing the dynamic properties of prototype structures by hammer testing.
Aves: Impact factors for simple concrete bridges.
Online since: February 2013
Authors: Dong Mei Zhao, Xue Peng Liu
For example, in the industrial automation, office automation and family automation residential use a lot of motor, almost all the power device to control, will be scheduled control scheme, planning instruction into expected mechanical movement.
Motion control was accused of mechanical movement to realize accurate position control and speed control, acceleration control, torque or force control, and these was accused of mechanical quantity of integrated control.
In a circuit with what kind of transistor no obvious limits, mainly depends on the transistor itself parameters, characteristics of the factors such as restrictions and cost.
But MOSFET fine self all flow properties that make it easy and even, so its expanding power use does not exist a lot of obstacles.
Therefore, drive circuit fit and unfit quality directly affect the performance of the converter.
Motion control was accused of mechanical movement to realize accurate position control and speed control, acceleration control, torque or force control, and these was accused of mechanical quantity of integrated control.
In a circuit with what kind of transistor no obvious limits, mainly depends on the transistor itself parameters, characteristics of the factors such as restrictions and cost.
But MOSFET fine self all flow properties that make it easy and even, so its expanding power use does not exist a lot of obstacles.
Therefore, drive circuit fit and unfit quality directly affect the performance of the converter.
Online since: March 2022
Authors: Roland Tolulope Loto, Cleophas Akinloto Loto
As a result, corrosion damage has broad economic consequences especially when factoring the financial implications [3, 4].
The physical and mechanical properties of Al can be modified precisely to the specific demands of various applications.
Gorman, 7 - Corrosion problems affecting steam generator tubes in commercial water-cooled nuclear power plants, Steam Generators for Nuclear Power Plants, Elsevier Ltd., Amsterdam, 2017, pp. 155-181
Loto, Anti-corrosion performance of the synergistic properties of benzenecarbonitrile and 5-bromovanillin on 1018 carbon steel in HCl environment, Sci.
Tobilola, Corrosion inhibition properties of the synergistic effect of 4-hydroxy-3-methoxybenzaldehyde and hexadecyltrimethylammoniumbromide on mild steel in dilute acid solutions, J.
The physical and mechanical properties of Al can be modified precisely to the specific demands of various applications.
Gorman, 7 - Corrosion problems affecting steam generator tubes in commercial water-cooled nuclear power plants, Steam Generators for Nuclear Power Plants, Elsevier Ltd., Amsterdam, 2017, pp. 155-181
Loto, Anti-corrosion performance of the synergistic properties of benzenecarbonitrile and 5-bromovanillin on 1018 carbon steel in HCl environment, Sci.
Tobilola, Corrosion inhibition properties of the synergistic effect of 4-hydroxy-3-methoxybenzaldehyde and hexadecyltrimethylammoniumbromide on mild steel in dilute acid solutions, J.
Online since: May 2019
Authors: Preda Pichayapan, Peerapong Jitsangiam, Phittayoot Chaleonpan, Pongsakorn Wongchana
The aggregate properties are shown in Table 1 below.
It shows the result of aggregate properties under a specification of DOH requirements.
Field investigation of factors affecting skid resistance variations in asphalt pavements.
Influence of engineering properties on Polished Stone Value (PSV): A case study on basic igneous rocks from Serbia.
BS EN ISO 1097-08, Test for mechanical and physical properties of aggregates – Part 8, BSI, London, UK.
It shows the result of aggregate properties under a specification of DOH requirements.
Field investigation of factors affecting skid resistance variations in asphalt pavements.
Influence of engineering properties on Polished Stone Value (PSV): A case study on basic igneous rocks from Serbia.
BS EN ISO 1097-08, Test for mechanical and physical properties of aggregates – Part 8, BSI, London, UK.
Online since: May 2022
Authors: Bijan Mohammadi, Ehsan Anbarzadeh
This study aimed to investigate the bone integration properties as well as the cytotoxicity between the implant surface and the jaw bone.
Numerous factors can affect a successful treatment with dental implants.
Some of the important factors are the time needed for integrating the implant surface with the patient's jawbone, the effect of the implant's geometric design on the implant-bone joint strength, and the mechanical properties of the materials used in the implant [7,8].
Also, more research is being done today to improve the mechanical properties of nanostructured implants.
Pavan, "Modelling of mandible bone properties in the numerical analysis of oral implant biomechanics", Computer methods and programs in biomedicine, 1;100(2), (2010) 158-165
Numerous factors can affect a successful treatment with dental implants.
Some of the important factors are the time needed for integrating the implant surface with the patient's jawbone, the effect of the implant's geometric design on the implant-bone joint strength, and the mechanical properties of the materials used in the implant [7,8].
Also, more research is being done today to improve the mechanical properties of nanostructured implants.
Pavan, "Modelling of mandible bone properties in the numerical analysis of oral implant biomechanics", Computer methods and programs in biomedicine, 1;100(2), (2010) 158-165
Online since: November 2015
Authors: Peter Sivák, Oskar Ostertag
The solved problem and the object of performed analyses
The technical issue solved in this paper is the investigation of the effects and the factors that led to permanent plastic deformation and occurrence of cracking in the structure of the locomotive, the excessive deterioration of the axle gripping, the drive mechanisms and the braking systems of the shunting locomotive.
Later, it turned out, that the used drive systems, braking and wagon interconnection significantly affected the movement of the whole set and were one of the major sources of potential problems.
They represented significant technical risk factors causing progressive damage of observed critical elements of the locomotive and the source of the technical problems that have arisen.
The determining fact was the knowledge that under experimental measurements it was not possible to perform a deeper analysis of the effects of the particular parameters on the dynamic properties of the system such as: · size of braking force, · clearance in the couplers, · train set speed before braking and others.
This will cause the decrease of shocks and shift at mechanical braking.
Later, it turned out, that the used drive systems, braking and wagon interconnection significantly affected the movement of the whole set and were one of the major sources of potential problems.
They represented significant technical risk factors causing progressive damage of observed critical elements of the locomotive and the source of the technical problems that have arisen.
The determining fact was the knowledge that under experimental measurements it was not possible to perform a deeper analysis of the effects of the particular parameters on the dynamic properties of the system such as: · size of braking force, · clearance in the couplers, · train set speed before braking and others.
This will cause the decrease of shocks and shift at mechanical braking.
Online since: July 2021
Authors: Serhii Pozdieiev, Olena Borsuk, Olha Nekora, Oleksandr Nuianzin
Scheme of application of mechanical load to the steel beam and fastening conditions.
The magnitude of the distributed load is taken by the load factor m = 0.2.
Using the mathematical apparatus and mathematical descriptions of the properties of materials described in [1], the time of influence of the standard temperature of the fire is calculated, at which the flame retardant mineral wool cladding detaches from the beam. 3.
Using the mathematical apparatus and mathematical descriptions of the properties of the materials contained in [1], the limit of fire resistance is calculated, as shown in fig. 3.
To do this, in the future a system of correction factors should be developed to reduce the value of the limit of fire resistance due to the sudden destruction of fire protection systems.
The magnitude of the distributed load is taken by the load factor m = 0.2.
Using the mathematical apparatus and mathematical descriptions of the properties of materials described in [1], the time of influence of the standard temperature of the fire is calculated, at which the flame retardant mineral wool cladding detaches from the beam. 3.
Using the mathematical apparatus and mathematical descriptions of the properties of the materials contained in [1], the limit of fire resistance is calculated, as shown in fig. 3.
To do this, in the future a system of correction factors should be developed to reduce the value of the limit of fire resistance due to the sudden destruction of fire protection systems.
Online since: February 2011
Authors: Md Akil Hazizan, Hasmaliza Mohamad, Muhammad Helmi Abdul Kudus
There are several ways of preparing MWCNT-alumina hybrid such as mechanical blending, magnetic stirring and sonication mixing of MWCNT and alumina together using mechanical approach, and some of researchers used to prepare the hybrid particles using chemical approach such as methane decomposition [7-11].
In methane decomposition process, there are many parameters that affect the properties of MWCNT-alumina hybrid particles such as type of catalyst, calcination and reduction temperature, calcination and reduction time, gas flow rates, methane decomposition temperature, and duration of methane decomposition [10-11].
Fig. 2: HRTEM images of synthesized MWCNT-alumina hybrid [13] Random morphology and catalytic activities of nickel catalyst are believed to be the factor of variation in MWCNT layers for each single MWCNT.
This homogenous distribution of MWCNT on alumina surface is necessary to optimize the effect of MWCNT-alumina hybrid properties as reinforcement in polymer matrix composites.
In methane decomposition process, there are many parameters that affect the properties of MWCNT-alumina hybrid particles such as type of catalyst, calcination and reduction temperature, calcination and reduction time, gas flow rates, methane decomposition temperature, and duration of methane decomposition [10-11].
Fig. 2: HRTEM images of synthesized MWCNT-alumina hybrid [13] Random morphology and catalytic activities of nickel catalyst are believed to be the factor of variation in MWCNT layers for each single MWCNT.
This homogenous distribution of MWCNT on alumina surface is necessary to optimize the effect of MWCNT-alumina hybrid properties as reinforcement in polymer matrix composites.