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Acceleration test method for simulating coupling effect of multiple environmental factors of ship-borne platform

An accelerated test and environmental factor technology, applied in the direction of testing material strength by applying repetitive force/pulsation force, testing material strength by applying stable tension/compression, testing wear resistance, etc. Ideal, but cannot be used to evaluate the corrosion performance of test samples at the structural level

Pending Publication Date: 2021-04-16
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these accelerated test methods lack the reproduction of coupling effects between different environmental factors, so the simulation of the shipboard platform environment is not ideal
On the other hand, most simulated accelerated test methods can only conduct environmental tests on material-level test samples (material test pieces), and cannot be used to evaluate the corrosion performance of structural-level test samples (structural test pieces)
Generally speaking, there is currently a lack of laboratory accelerated test methods that can effectively simulate the environmental characteristics of shipboard platforms

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] For the aluminum alloy riveted structure serving in the shipboard platform environment, the following test conditions can be selected according to its actual service conditions, and the test time required to reproduce the coupling effect of multiple environmental factors can be determined:

[0042] According to the connection mode (rivet connection) and composition materials (2A97-T3 aluminum-lithium alloy, 7050-T7451 aluminum alloy, YSA602-4×9 oblate head 2A10 aluminum alloy) rivets), material specifications (2A97-T3 aluminum-lithium alloy, 7050-T7451 aluminum alloy sheet thickness 1.5mm), protection system (sulfuric acid anodization + QH-15 high anti-corrosion primer + QFS-15 topcoat), preparation 301mm×80mm ×1.5mm aluminum alloy riveted structure test pieces, 5 pieces in total. Make 5 aluminum alloy riveted structure test pieces go through the following 4-stage cyclic test, determine the appropriate laboratory accelerated test time, and evaluate the corrosion perform...

Embodiment 2

[0056] For the aluminum alloy-composite material screwed structure serving in the shipboard platform environment, the following test conditions can be selected according to its actual service conditions, and the test time required to reproduce the coupling effect of multiple environmental factors can be determined:

[0057] According to the connection mode (screw connection) and composition materials (2A97-T3 aluminum-lithium alloy, 7050-T7451 aluminum alloy, AC531 / CF8611 carbon fiber reinforced resin) matrix composite materials, YSA101-4-3A titanium alloy bolts, YSA503-4 titanium alloy nuts), material specifications (2A97-T3 aluminum-lithium alloy sheet, 7050-T7451 aluminum alloy sheet, AC531 / CF8611 carbon fiber reinforced resin matrix composite laminate Thickness 1.5mm), protection system (2A97-T3 aluminum-lithium alloy and 7050-T7451 aluminum alloy adopt sulfuric acid anodization + QH-15 high anti-corrosion primer + QFS-15 topcoat, AC531 / CF8611 carbon fiber reinforced resin-...

Embodiment 3

[0071] For the aluminum alloy-titanium alloy screw joint structure serving in the shipboard platform environment, the following test conditions can be selected according to its actual service conditions, and the test time required to reproduce the coupling effect of multiple environmental factors can be determined:

[0072] According to the connection mode (screw connection) and composition materials (2A12-T4 aluminum alloy, TC21 titanium alloy, YSA101-4-3A titanium alloy bolts, YSA503-4 titanium alloy nut), material specifications (2A12-T4 aluminum alloy sheet thickness 1.5mm, TC21 titanium alloy forging thickness 3mm), protection system (2A12-T4 aluminum alloy is anodized with sulfuric acid + QH-15 high anti-corrosion primer + QFS-15 topcoat, TC21 titanium alloy adopts thick film anodization + QH-15 high anti-corrosion primer + QFS-15 topcoat), and prepares 301mm×80mm×3mm aluminum alloy-titanium alloy screwed structure test pieces, a total of 5 pieces. Five aluminum alloy-t...

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PUM

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Abstract

The invention belongs to the technical field of environmental engineering and test, and relates to an acceleration test method for simulating the coupling effect of multiple environmental factors of a ship-borne platform. The method comprises the following steps: preparing a fixed connection structure test piece according to a connection mode, a composition material, a material specification and a protection system of a fixed connection structure serving in a ship-borne platform environment, carrying out a cyclic test of the following four stages, and determining proper time of a laboratory acceleration test. According to the invention, the effect of the ship-borne platform environment on the fixed connection structure is reproduced by adopting a laboratory environment test method of introducing multiple environmental factors, the damage effects of damp heat, ultraviolet radiation, low-temperature load, salt mist and the like on the fixed connection structure are comprehensively considered, and the process that the fixed connection structure is influenced by the environmental factors is well simulated; the laboratory acceleration test method is provided for more accurately and quickly evaluating and estimating the corrosion performance of the shipboard aircraft fixed connection structure under the coupling effect of environmental factors.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering and testing, and relates to an accelerated test method for simulating the coupling effect of multiple environmental factors on a shipboard platform, which is suitable for quickly reproducing the coupling effect of environmental factors on a fixed connection structure of a shipboard aircraft in a laboratory. Background technique [0002] Exposure to the natural environment for a long time, the aircraft body structure is prone to corrosion (aging) under the action of various environmental factors such as temperature, humidity, solar radiation, and chloride ions. Due to differences in material types, surface states, and connection methods, the corrosion laws of various structures under specific natural environmental conditions are not the same. [0003] In order to grasp the corrosion law of typical aircraft structures in a specific environment, it is usually necessary to carry out ...

Claims

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Application Information

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IPC IPC(8): G01N3/18G01N3/32G01N3/56G01N17/00G01N17/02
Inventor 骆晨刘明潘峤孙志华李海杨
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS