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Introduction Ship accident, especially as a result of the fire accident, is the most dangerous part of marine disasters, caused huge losses of life and property.
Due to the special working environment of the ship, especially on warship, the fire extinguisher is facing all kinds of threat: such as the mechanical vibration of the ship, high temperature in stokehold or on the deck which is exposed to sun, low temperatures when the ship sailing in cold regions, salt corrosion, shock impact when the ship swings in a stormy voyage.
All these factors may lead to fire extinguisher abnormality and unable to extinguish ship fire effectively.
The presence of the deficiencies and disadvantages of the fire extinguishers in the domestic market discussed above, will definitely affect the ship fire fighting ability in future fire disasters.
China's national standard also lack of sufficient consideration of ship's mechanical heat and solar thermal radiation.

When rock is subjected to hydraulic loading, these pre-existing defects can induce crack or fracture growth, which can in turn change the structure of the rock and alter the fluid flow properties of the rock [13].
This heterogeneity related flow properties could influence the hydraulic fracturing behaviour in many ways.
• The local heterogeneity in the properties of rock masses is defined by Weibull function, that is               −      = − m o m oo s s s s s m ms exp ),( 1 ϕ (1) where s is the element strength f or elastic modulus E, and s0 is the mean strength f0 or elastic modulus of elements E0.
Table 1: Input material mechanical properties - mean values Parameter value Homogeneity index/ m 1.5,3,1000 Young's modulus/ E0 6 GPa Poisson's ratio / v 0.25 internal friction angle/φ 30° Compression strength/ fc 60MPa Tension strength/ ft 6MPa Coefficient of residual strength / f cr/ fc = f tr/ ft 0.1 Permeability/ k0 0.01m/s Initiate water pressure/ p i 5MPa water pressure /Δp 0.1MPa Water pressure coefficient/α 0.1 Biot's constants/β 0.01 From the computer pattern, one can conclude that the stress in each element is affected not only by the in-situ stresses but also its stiffness.
It can also be deduced previously that the pressurizing fluid flowing into the cracks is the main factor

All this combined with one of the most important factors involved in the construction industry, the financial and environmental cost of maintenance and repair of structures.
Adewumi et al. [40] estimated the physical, mechanical and hydrological properties of permeable concrete using Support Vector Regression (SVR).
It was observed that having a large amount of laboratory data is important in order to diminish variations, since many of them significantly affect the final model.
Diez, Factors controlling cracking of concrete affected by reinforcement corrosion, Materials and Structures. 31 (1998) 435–441
Olatunji, Estimation of physical, mechanical and hydrological properties of permeable concrete using computational intelligence approach, Applied Soft Computing Journal. 42 (2016) 342–350

Studies show that the effect of traveling wave effect on the structural dynamic response is multifaceted, due to the nature of the reciprocating motion of the shock , when considering the traveling wave effect , subject to the incentive structures in different locations may be the opposite direction , causing an earthquake component structure of mutually different locations constraints or offset , and thus the internal force and deformation of the structure part of the region 's favorable , on the part of regional disadvantage ; depending on the velocity of seismic waves are traveling effect sizes decisive factor , in general , the lower depending on the velocity of seismic waves traveling wave effect is more significant with the visual velocity increases, the impact of traveling wave effect is gradually reduced , consistent with the results of the structural response tends to be motivated .
The expansion joint used Combin40 gap element to simulate, and the sliding limit is set to zero in order to close the sliding function, and its mechanical model is simplified to a gap, a linear spring and a continuous and viscous damping.
Due to the uncertainty of the direction of seismic wave propagation ,proximal, distal is relative, anywhere in the structure may be affected by the traveling wave effects.
The seismic response in expansion joints is most affected by the traveling wave effect, when the apparent wave velocity is smaller, the relative displacement and the collision force increase significantly, far more than consistent incentive effect.Under the uniform excitation, the displacement of expansion joints at both ends is basically the fundamental harmonic vibration characteristics, because of the rubber buffer block at the end of the beam, When the displacement of the beam end close to each other is larger than the gap,the resistance is larger; When one beam end is away from the other, the resistance is smaller, so when the displacement of one beam end near the other is more than 4 cm, the characteristics of the "peak" will appear.The smaller the apparent wave velocity is, the farther the displacement of joints close to each other and away from each other at both ends is, the greater the collision force at the end of the beam is, so it is easy for expansion joints to damage.
The mechanical properties of railway Bridges and safety monitoring research when excavates the soft soil deep foundation pit [D].

Fibers had the effect of improving some of the material properties of concrete such as flexural toughness, fatigue resistance, impact resistance, and post-crack strength [1, 2, and 3].
The fibers enhance the concrete properties by improving its effectiveness in inhibiting the rapid and unlimited propagation of cracks, associated with catastrophic failure in plain concrete.
Synthetic fibers have some unique properties that make them excellent candidates to be used in concrete.
The geometrical and mechanical properties of fibers used in this study are presented in table 2.
Geometrical and mechanical properties of fibers Fiber ID shape Length (mm) Specific gravity Tensile strength (MPa) Elastic modulus (GPa) CR crimped 60 0.91 379 4.14 TWS Twisted 60 0.91 379 4.14 Mixtures.

Introduction Condition monitoring and diagnostics has always been an important factor in rotating machinery in order to increase reliability and safety [1].
Damage in a structural system can be defined as intentional or unintentional change to the material and/or geometric properties of the system, including changes to the boundary conditions and system connectivity, which adversely affect the current or future performance of that system [2].
The success of all damage detection methods in industrial applications is influenced by three major factors: (1) interpretation of complex data should be avoided in order to allow performing the maintenance by modestly qualified technicians; (2) baseline measurements representing undamaged structure should be avoided as it is frequently not possible to obtain this data in practice; (3) large transducer networks should be avoided for the reasons of practicality and to ease the logistics.
The gap between the original work of Hennecke et. al. and widespread interest in the method, after the publication of Favro et al., is due to several factors one of the most important being the availability of more efficient and affordable infrared cameras that are necessary to perform measurements.
(Eds.), 2005, Damage prognosis for aerospace, civil and mechanical systems, John Wiley & Sons

The selection of the activator has a significant effect on the resulting physical and mechanical properties of AAS materials, as the type of activator significantly influences the hydration process.
The moisture gradient during drying affects the distribution and size of pores throughout a cross-section.
· If the SG is used for the CTE determination, it is necessary to introduce a correction factor.
One of the project's objectives is to determine a correction factor for CTE using SG.
Puertas, Alkali-activated slag mortars: Mechanical strength behaviour, Cem.

Rao [37] reviewed details including different PCM-mortar combinations in addition to their thermal and mechanical properties in the field of synergy of PCM achieving energy efficiency in buildings.
It is known as a material made to be provided with thermal properties including thermal conductivity and resistance.
The curves fluctuate in accordance to outer temperature fluctuations which directly affects the total heat transfer value reaching a final value of 11.42 W for the insulated room and 88.211 W for the non-insulated room after 90 minutes.
Improvement factor versus time.
Comparative Analysis of the Thermal Insulation Properties of Fabrics Made of Natural and Man-Made Cellulose Fibers.

This is an important force factor in drilling operations.
The cutting force value is primarily affected by the following cutting conditions: - Cutting speed, vc, feed, f, and depth of cut, ap - Cutting tool geometry (tool orthogonal rake angle) - Properties of work material As it may be expected, the size relationship between the force components varies considerably with the type of machining operation.
We can nevertheless apply correction factors if the conditions are not identical.
The tool will run through a python script that • Creates data layout for ABAQUS by generating .inp file in with the boundary conditions such as iso-statisme condition, clamping pressures, material properties and the corresponding cutting forces for line boring process are defined; • Starts ABAQUS software and runs .inp file on Renault’s calculation server; • Carries out the results post-processing in .dat file generated by ABAQUS software and presents them in an Excel file.
A simple elasto-plastic constitutive law is used in ABAQUS software to compute the mechanical properties of both cylinder blocks.

PPS filter material main characteristics and performance: PPS physicochemical properties indicate use continuously temperature 190˚C ，PPS liao physicochemical properties of continuous use temperature indicating 190˚C , instantaneous temperature 220 ˚C, this is made in the laboratory, aand the actual conditions of the data has certain disparity.PPS filter material oxidation resistance ability is weak, high temperatures will sulfur atoms combine with oxygen, easy to break the molecular structure (Fig. 1).
Electrostatic precipitators of two boilers in a plant were all changed to fixed pulse row-blowing bag dedusters.The distribution of flow gas entering into one bag deduster was poor and the boiler water-cooling wall tube burst happened many times, effect of oil atomization for ignition was not good, and these factors made the bag deduster’s operation far from perfect.
Ozone (O3) generate analysis for influence properties of PPS filter bag Composite electrostatic bag precipitator electric area part, produce corona discharge, make dust charged, will be charged dust flooding into dust collecting extremely dust collecting.
The analysis for NO2 of the flue gas influence on the PPS filter bag performance Except ozone (O3), another factor harming PPS is NO2 in flue gas.
If oxygen content is up to 12%, the temperature should drop to 140˚C.In brief, based on the experience at home and abroad[1-4],consider filter material physical properties, bending and permeability and long service life, the weight of filtering materials is 600g/m2.