scholarly journals Fiberglass as an alternative to metals in ship repair

2021 ◽  
pp. 15-27
Author(s):  
Evgeniy G. Burmistrov Burmistrov ◽  
Tatiana А. Mikheeva Mikheeva
Keyword(s):  
Metal Consumption ◽  
Intermediate Results ◽  
Strength And Durability ◽  
Ship Repair

The article presents the intermediate results of a study carried out to determine the prospects for reducing the metal consumption of ship repair. The area of research is ship repair, in particular, the repair of hulls and superstructures of metal ships, and the object is fiberglass used in the repair, in particular, their strength and durability. The studies were carried out using well-known methods - spontaneous peeling, shearing, limiting states. The results obtained made it possible to establish that the use of fiberglass plastics can reduce the metal consumption of ship repairs by three times. In addition, the article describes a method for calculating the thickness of a fiberglass coating, which is equivalent in strength to a metal backup, and also provides expressions for evaluating the calculated resistance of the coating, which determines its durability. In conclusion, it was concluded that it is necessary to expand the study area of the applicability of fiberglass during the repair of ships, not limiting it only to such obvious objects of repair as the hull, superstructure, pipelines.

Microstructure of an extruded rapidly solidified Al-8Fe-2Mo alloy

1986 ◽  
Vol 44 ◽  
pp. 548-549
Author(s):  
W. T. Donlon ◽  
J. E. Allison ◽  
S. Shinozaki
Keyword(s):  
Electron Microscopy ◽  
Automotive Industry ◽  
Fuel Economy ◽  
High Strength ◽  
Al Alloys ◽  
Light Weight ◽  
Thin Sections ◽  
Strength And Durability ◽  
Rapidly Solidified ◽  
Whitney Aircraft

Light weight materials which possess high strength and durability are being utilized by the automotive industry to increase fuel economy. Rapidly solidified (RS) Al alloys are currently being extensively studied for this purpose. In this investigation the microstructure of an extruded Al-8Fe-2Mo alloy, produced by Pratt & Whitney Aircraft, Goverment Products Div. was examined in a JE0L 2000FX AEM. Both electropolished thin sections, and extraction replicas were examined to characterize this material. The consolidation procedure for producing this material included a 9:1 extrusion at 340°C followed by a 16:1 extrusion at 400°C, utilizing RS powders which have also been characterized utilizing electron microscopy.

Use of backscattered electron image intensity signals to calculate the water/cement ratio of concrete

1992 ◽  
Vol 50 (1) ◽  
pp. 356-357
Author(s):  
R. J. Lee ◽  
A. J. Schwoeble ◽  
Yuan Jie
Keyword(s):  
Reliable Data ◽  
X Ray ◽  
Rapid Measurement ◽  
Trained Personnel ◽  
Electron Image ◽  
Backscattered Electron ◽  
Production Period ◽  
Strength And Durability ◽  
Automated Procedures ◽  
Standard Density

Water/Cement (W/C) ratio is a very important parameter affecting the strength and durability of concrete. At the present time, there are no ASTM methods for determining W/C ratio of concrete structures after the production period. Existing techniques involving thin section standard density comparative associations using light optical microscopy and rely on visual comparisons using standards and require highly trained personnel to produce reliable data. This has led to the exploration of other methods utilizing automated procedures which can offer a precise and rapid measurement of W/C ratio. This paper discusses methods of determining W/C ratio using a scanning electron microscope (SEM) backscattered electron image (BEI) intensity signal and x-ray computer tomography.

Abciximab in Carotid Stenting for Postsurgical Carotid Restenosis: Intermediate Results

2000 ◽  
Vol 7 (4) ◽  
pp. 263-272 ◽  
Author(s):  
Jacob Schneiderman ◽  
Benyamina Morag ◽  
Alexander Gerniak ◽  
Uri Rimon ◽  
David Varon ◽  
...  
Keyword(s):  
Carotid Stenting ◽  
Intermediate Results

DEVELOPMENT OF POLYMER COMPOSITES WITH IMPROVED THERMOPHYSICAL PROPERTIES FOR SHIPBUILDING AND SHIP REPAIR

2019 ◽  
Vol 10 (2) ◽  
pp. 117-134 ◽  
Author(s):  
A. V. Akimov ◽  
A. V. Buketov ◽  
А. А. Sapronov ◽  
Mykola V. Brailo ◽  
S. V. Yakushchenko ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Thermophysical Properties ◽  
Ship Repair

INCREASING THE WEAR RESISTANCE OF ELEMENTS AND COMPONENTS OF FORGING AND STAMPING EQUIPMENT (FOR EXAMPLE, PERFORMING SEPARATION OPERATIONS)

2020 ◽  
Author(s):  
K.O. Kobzev ◽  
◽  
S.A. Vyalov ◽  
E.S Bozhko ◽  
I.A. Zolotuhina ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Technological Capabilities ◽  
Recoil Force ◽  
The Press ◽  
Strength And Durability

The article describes the possibilities of increasing the durability of crank presses. The influence of the main parameters of the press on the value of the recoil force was studied. Based on the analysis of this topic, the types of expansion of technological capabilities of crank presses and their strength and durability were summarized.

Strength and Durability Characteristics of Stabilized and Compressed Laterite Bricks

2014 ◽  
Vol 4 (4) ◽  
pp. 1-6
Author(s):  
Shanmuka K.N ◽  
◽  
Manjunath. K S ◽  
Prahallada M.C. ◽  
◽  
...  
Keyword(s):  
Strength And Durability

SELECTION OF THE DRIVE OF THE PULSE GENERATOR FOR WAVE DEFORMATION HARDENING

2020 ◽  
Author(s):  
Andrey Kirichek ◽  
Dmitriy Solovyev
Keyword(s):  
Strain Hardening ◽  
Pulse Generator ◽  
Surface Plastic Deformation ◽  
Surface Plastic ◽  
Impact Frequency ◽  
Metal Consumption ◽  
Pulse Generators ◽  
Energy Impact ◽  
Deformation Hardening ◽  
Selection Of

The article is devoted to the analysis of known structures of impact devices used in industry in order to obtain recommendations for their adaptation or when creating new structures for wave strain hardening by surface plastic deformation. The analysis was carried out on the used drive and on the main parameters of impact devices: impact energy, impact frequency, relative metal consumption and efficiency. The options are the best combinations of parameters for electric, pneumatic and hydraulic drives. Recommendations are given on the use of such devices, with appropriate adaptation, as pulse generators for wave strain hardening.

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