WO2013077328A1 - Pâte pour empêcher le développement de fissures de fatigue - Google Patents

Pâte pour empêcher le développement de fissures de fatigue Download PDF

Info

Publication number
WO2013077328A1
WO2013077328A1 PCT/JP2012/080086 JP2012080086W WO2013077328A1 WO 2013077328 A1 WO2013077328 A1 WO 2013077328A1 JP 2012080086 W JP2012080086 W JP 2012080086W WO 2013077328 A1 WO2013077328 A1 WO 2013077328A1
Authority
WO
WIPO (PCT)
Prior art keywords
paste
particles
fatigue crack
fatigue
crack
Prior art date
Application number
PCT/JP2012/080086
Other languages
English (en)
Japanese (ja)
Inventor
恭平 河本
山田　岳史
Original Assignee
株式会社神戸製鋼所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社神戸製鋼所 filed Critical 株式会社神戸製鋼所
Priority to KR1020147013177A priority Critical patent/KR101632125B1/ko
Priority to CN201280055902.4A priority patent/CN103945977B/zh
Publication of WO2013077328A1 publication Critical patent/WO2013077328A1/fr

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P6/00—Restoring or reconditioning objects
    • B23P6/04—Repairing fractures or cracked metal parts or products, e.g. castings
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/20—Metals
    • G01N33/202—Constituents thereof
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/20—Metals
    • G01N33/204—Structure thereof, e.g. crystal structure
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/51—Particles with a specific particle size distribution
    • C01P2004/52—Particles with a specific particle size distribution highly monodisperse size distribution
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/22—Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability

Definitions

  • the present invention relates to a paste for suppressing fatigue crack growth that suppresses the growth of fatigue cracks generated in a metal member.
  • a fatigue crack is a crack formed under the action of repetitive stress. Further, when a stress is repeatedly applied to a fatigue crack generated in a metal member, the fatigue crack progresses and eventually the metal member It will lead to cutting. Therefore, a technique for suppressing the progress of fatigue cracks is important. With regard to fatigue cracks, foreign matter such as fretting oxide (oxide generated by rubbing the oxide layer on the crack surface) is generated in the fatigue crack surface, and the fatigue crack growth rate is reduced due to the wedge effect. Is widely known.
  • the mechanism of the decrease in fatigue crack growth rate due to the wedge effect is to reduce the opening displacement of the crack tip when foreign matter enters the crack surface (effective for crack growth).
  • FIG. 8 shows a case where the foreign matter is not crushed at all.
  • the fatigue crack growth rate per cycle of stress fluctuation has a strong correlation with the opening displacement at the tip of the fatigue crack.
  • Patent Documents 1 and 2 a paste for suppressing fatigue crack growth in which fine particles having high hardness and a liquid such as oil are mixed has been proposed (for example, Patent Documents 1 and 2).
  • This paste is applied to a portion where a fatigue crack is generated in the metal member, and penetrates to the tip of the fatigue crack by the action of capillary action and pump effect.
  • grains contained in the paste express the wedge effect mentioned above in the fatigue crack front-end
  • this paste unlike the adhesive, it does not harden, has fluidity, and penetrates into the crack, so that it is possible to continuously exert the effect of suppressing crack propagation.
  • Patent Document 1 As a paste for suppressing fatigue crack propagation, it is a paste applied to a place where a fatigue crack is generated in a metal member, and has a particle size of 2 ⁇ m to 40 ⁇ m. A paste obtained by mixing alumina particles and oil having a viscosity of 5 to 15 Pa ⁇ s is disclosed.
  • the stress intensity factor range (stress intensity factor range: an index representing the magnitude of the fatigue load acting on the fatigue crack tip) If this stress intensity factor range is large, the amount of opening displacement at the crack tip increases, and therefore the growth rate of fatigue cracks increases.) Depending on the size of the case, compared to the case where no paste is used, There was a problem that the effect of fatigue crack growth suppression was small and sometimes insufficient.
  • the crack tip opening amount was small, so it matched the opening amount. Small-diameter particles tend to promote crack closure due to penetration of the particles into the crack (see FIG. 1A).
  • the crack tip opening is large. Large-diameter particles matching the opening amount are suitable for promoting crack closure by the penetration of the particles into the crack (see FIG. 1B).
  • the paste described in Patent Document 1 is a paste using alumina particles having a relatively large particle size of 15.2 ⁇ m in average particle size, so that the crack tip opening amount is large (stress This is an area where the expansion coefficient range is large, for example, effective in a crack tip opening amount of 10 to 20 ⁇ m, while the crack tip opening amount is small (a region where the stress intensity factor range is small, such as a crack In the case where the tip opening amount is 2 ⁇ m or less), it is presumed that the alumina particles were too large and the fatigue crack growth inhibiting effect was not effectively exhibited.
  • alumina particles having a particle size that matches the opening amount of the crack tip at the time of the fatigue crack as the alumina particles to be included in the paste. Because, for a fatigue crack at a certain time point, an alumina particle having a particle size corresponding to the opening amount of the crack tip at that time is selected to produce a paste and applied to the site of this fatigue crack, Then, when this fatigue crack progresses and the crack tip opening amount is larger than that at the time of application, the alumina particles at the time of application have a relatively small particle diameter and have progressed. This is because the paste is not suitable for fatigue cracks. In other words, it is necessary to consider the alumina particles contained in the paste so as to have a particle size distribution corresponding to the opening amount of the crack tip that changes as the fatigue crack progresses.
  • an object of the present invention is to provide a fatigue crack growth inhibiting paste that can always exhibit a fatigue crack growth inhibiting effect corresponding to the fatigue crack growth.
  • the present invention takes the following technical means.
  • the invention of claim 1 is a paste for fatigue crack growth suppression that suppresses the growth of fatigue cracks in a metal member, and is a mixture of particles and liquid, and the particle size distribution of the particles is 20 ⁇ m or less. 100% by mass, 95-100% by mass of particles having a particle size of 10 ⁇ m or less, 45-99% by mass of particles having a particle size of 2.0 ⁇ m or less, 20-85% by mass of particles having a particle size of 1.0 ⁇ m or less, A paste for suppressing fatigue crack growth, characterized in that particles having a particle size of 0.5 ⁇ m or less are in the range of 7 to 50% by mass, and particles having a particle size of 0.1 ⁇ m or less are in the range of 0 to 5% by mass.
  • the invention of claim 2 is characterized in that, in the paste for suppressing fatigue crack growth according to claim 1, the viscosity is 5 Pa ⁇ s or more and less than 70 Pa ⁇ s.
  • the invention of claim 3 is characterized in that in the paste for suppressing fatigue crack growth of claim 1 or 2, the particles are alumina.
  • the particles constituting the paste have an appropriate particle size distribution that matches the crack tip opening amount that changes as the fatigue crack progresses.
  • the fatigue crack growth suppressing effect can always be sufficiently exhibited in response to the progress of cracks. Therefore, the life extension of, for example, a steel structure in which a fatigue crack has occurred can be achieved.
  • the paste for suppressing fatigue crack growth of the present invention (hereinafter also simply referred to as paste) has fluidity, and is a mixture of high hardness particles such as alumina particles and a liquid having an appropriate viscosity such as industrial oil. It is made.
  • a feature of the paste of the present invention is that the particles constituting the paste have a particle size distribution matched to the crack tip opening amount that changes from a small state to a large state as the fatigue crack progresses (See FIG. 1 above). Thereby, the paste of this invention can fully exhibit the fatigue crack progress inhibitory effect by always expressing the wedge effect continuously corresponding to the progress of the fatigue crack. That is, the paste of the present invention can always sufficiently exert the effect of suppressing fatigue crack growth regardless of the size of the fatigue load (the magnitude of the stress intensity factor range) that changes with the progress of the fatigue crack. .
  • FIG. 2 is a diagram showing the relationship between the appropriateness of the particle size distribution of the particles constituting the paste and the crack propagation characteristics due to this, in order to explain the operational effects of the present invention.
  • the crack growth indicated by (C) As in the characteristics, in the region where the stress intensity factor range is small (the region where the crack tip opening amount is small), the crack tip opening is small, and there is a shortage of small-sized particles corresponding to the crack. Since the fissure cannot be induced, the fatigue crack growth rate cannot be sufficiently reduced as compared with the case (A) without the paste. In the case of this paste, in the region where the fatigue crack propagates and the stress intensity factor range is large, the fatigue crack growth rate can be reduced as compared with the case (A) without the paste.
  • the paste of the present invention is a fatigue crack in which the opening amount of the crack tip finally grows to about 10 ⁇ m to 20 ⁇ m as a fatigue crack generated in a metal member (a general fatigue crack that is subject to progress suppression).
  • the particle size distribution is 100% by mass for particles having a particle size of 20 ⁇ m or less, 95 to 100% by mass for particles having a particle size of 10 ⁇ m or less, and 2.0 ⁇ m or less for particle size.
  • the paste of the present invention has the above-mentioned particle size distribution in the particles constituting the paste, so that it can be applied to the above-mentioned fatigue crack, thereby reducing the fatigue crack compared to the case without the paste.
  • the fatigue crack growth rate can always be reduced corresponding to the growth.
  • the particle size of the particles was measured by a measuring device using a laser diffraction / scattering method.
  • the percentage that defines the abundance ratio of particles having a specific particle size is essentially a volume percentage because it is an index representing the degree of mixing of large and small particles, but in practice it may be a mass percentage. Since it does not matter, the mass percentage is used.
  • the viscosity of the paste itself is 5 Pa ⁇ s or more and less than 70 Pa ⁇ s in order to ensure that the paste penetrates into the fatigue crack. If the viscosity of the paste itself is less than 5 Pa ⁇ s, the fluidity is too high, and the paste applied to the fatigue crack occurrence portion flows out of the fatigue crack occurrence portion and does not stay in the fatigue crack. On the other hand, at 70 Pa ⁇ s or more, the paste adheres to the fatigue crack occurrence portion. Therefore, the viscosity of the paste itself is preferably 5 Pa ⁇ s or more and less than 70 Pas.
  • the viscosity of a liquid such as industrial oil mixed with the particles is preferably 0.8 Pa ⁇ s or less.
  • a “smooth” liquid such as 0.8 Pa ⁇ s or less, the amount of particles per unit amount of paste increases at the same paste viscosity, so that the wedge effect due to the particles can be sufficiently exerted.
  • Examples of the particles constituting the paste of the present invention include those made of a material having high hardness such as alumina, silica, diamond, silicon carbide, boron carbide. And since the thing of a wide particle size range can be obtained easily and a price is cheap, what consists of alumina especially as a particle
  • a fatigue crack growth test was conducted.
  • Alumina was used as the particles constituting the paste, and eight types of alumina pastes (Examples 1 to 3 and Comparative Examples 1 to 5) having different particle size distributions of alumina particles were prepared and subjected to fatigue crack growth tests.
  • Table 1 shows the particle size distribution of alumina particles contained in the eight types of alumina paste subjected to the fatigue crack growth test.
  • the eight types of alumina pastes were produced by adding industrial oil to alumina particles having the particle size distribution shown in Table 1. In this production, the blending ratio of the alumina particles and the industrial oil was adjusted so that the viscosity of the paste of these alumina pastes was 5 Pa ⁇ s or more and less than 70 Pa ⁇ s.
  • FIG. 4 is a view showing a tensile fatigue test piece subjected to a test in an example of the present invention, in which (a) is a front view and (b) is a side view.
  • the material of the tensile fatigue test piece is SS400, and the thickness (plate thickness) is 12.5 mm as shown in FIG.
  • the initial crack length of the tensile fatigue test piece is 20 mm [(slit length 15 mm) + (pre-crack length 5 mm)].
  • the fatigue crack growth test (tensile fatigue test) was performed by applying an alumina paste to the tensile fatigue test piece.
  • This test piece is mounted on the tester with two bolts inserted through a hole of ⁇ 12.5 mm, and a tensile load is repeatedly applied in the vertical direction in FIG.
  • the testing machine is a hydraulic servo type fatigue testing machine, and performs a uniaxial tension test by load control.
  • the test conditions are stress ratio (minimum stress / maximum stress): 0.05, test frequency: 20 Hz.
  • the crack growth characteristics (relationship between the stress intensity factor range and the fatigue crack growth rate) in the case of using each of the alumina pastes were determined by the fatigue crack growth test.
  • the crack length is periodically measured for a developing fatigue crack in a tensile fatigue test piece mounted on a testing machine, and the stress intensity factor range, fatigue crack growth rate, and Sought the relationship.
  • the stress intensity factor range ⁇ K is expressed by the following equation based on the load (N), crack length (mm), and specimen size.
  • ⁇ K f ⁇ (P / (B ⁇ W))
  • f crack shape factor
  • P load (N)
  • B test piece thickness (mm)
  • W distance (mm) from the load surface to the end of the test piece.
  • the crack shape factor f is expressed by the following equation.
  • a is the crack length (mm).
  • f 29.6 ⁇ (a / W) 1/2 -185.5 ⁇ (a / W) 3/2 + 655.7 ⁇ (a / W) 5/2 ⁇ 1017 ⁇ (a / W) 7/2 + 638.9 ⁇ (a / W) 9/2
  • Table 2 shows data indicating crack growth characteristics (relationship between stress intensity factor range and fatigue crack growth rate) with the pastes of Examples 1 to 3, and Table 3 shows crack growth with the pastes of Comparative Examples 1 to 5. It is data indicating characteristics.
  • Table 4 shows data indicating crack propagation characteristics in the case of no paste.
  • FIG. 5 to FIG. 7 are graphs of the data in Tables 2 to 4.
  • FIG. 5 shows the results of fatigue crack growth tests according to Examples 1, 2, and 3 of the present invention, showing the relationship between the stress intensity factor range and the fatigue crack growth rate
  • FIG. It is a figure which shows the fatigue crack growth test result by Example 3 and Comparative Examples 1 and 2, and shows the relationship between the stress intensity factor range and the fatigue crack growth rate
  • FIG. 7 shows the fatigue crack growth test results of Example 3 of the present invention and Comparative Examples 3, 4 and 5, and shows the relationship between the stress intensity factor range and the fatigue crack growth rate. is there.
  • the pastes of Examples 1 to 3 of the present invention “no paste” is observed over the entire test data (stress intensity factor range ⁇ K: 16.4 to 38.4 MPa ⁇ m 1/2 ).
  • the fatigue crack growth rate was significantly reduced as compared with the above, and a good result was obtained that the fatigue crack growth rate was about 1/20 of the fatigue crack growth rate without the paste. Therefore, the pastes of Examples 1 to 3 can always exert the effect of suppressing the crack growth from the initial stage to the generated fatigue crack, and can contribute to the extension of the life of the steel structure with the fatigue crack. It becomes.
  • Comparative Examples 4 and 5 In the paste, in the region where the stress intensity factor range ⁇ K was large, the crack growth rate decreased as in Examples 1 to 3, but in the region where the stress intensity factor range ⁇ K was small (26 MPa ⁇ m 1/2 or less), The crack growth rate could not be reduced, and the crack growth suppressing effect was reduced.
  • the paste of Comparative Example 3 also has particles having a relatively small particle size (over 2 ⁇ m to 10 ⁇ m or less) compared to Comparative Examples 4 and 5. In a region where the crack growth inhibiting effect is not manifested and the stress intensity factor range ⁇ K is smaller than those in Comparative Examples 4 and 5, the crack propagation inhibiting effect is smaller than in Example 3.
  • the present invention can prolong the life by suppressing the progress of fatigue cracks in various steel structures.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)

Abstract

Cette pâte destinée à empêcher le développement de fissures de fatigue est un mélange de particules et d'un liquide, lesdites particules ayant une répartition de tailles de particule telle que : le rapport des teneurs isotopiques de particules ayant un diamètre de 20 μm ou moins est de 100 % en masse ; celui des particules ayant un diamètre de 10 μm ou moins est compris entre 95 et 100 % en masse ; celui des particules ayant un diamètre de 2,0 μm ou moins est compris entre 45 et 99 % en masse ; celui des particules ayant un diamètre de 1,0 μm ou moins est compris entre 20 et 85 % en masse ; celui des particules ayant un diamètre de 0,5 μm ou moins est compris entre 7 et 50 % en masse ; et celui des particules ayant un diamètre de 0,1 μm ou moins est compris entre 0 et 5 % en masse. La pâte peut empêcher le développement de fissures de fatigue d'un élément métallique.
PCT/JP2012/080086 2011-11-21 2012-11-20 Pâte pour empêcher le développement de fissures de fatigue WO2013077328A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020147013177A KR101632125B1 (ko) 2011-11-21 2012-11-20 피로 균열 진전 억제용 페이스트
CN201280055902.4A CN103945977B (zh) 2011-11-21 2012-11-20 用于抑制疲劳裂纹扩展的糊剂

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011254165 2011-11-21
JP2011-254165 2011-11-21

Publications (1)

Publication Number Publication Date
WO2013077328A1 true WO2013077328A1 (fr) 2013-05-30

Family

ID=48469772

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/080086 WO2013077328A1 (fr) 2011-11-21 2012-11-20 Pâte pour empêcher le développement de fissures de fatigue

Country Status (4)

Country Link
JP (1) JP5753528B2 (fr)
KR (1) KR101632125B1 (fr)
CN (1) CN103945977B (fr)
WO (1) WO2013077328A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015085509A (ja) * 2013-09-26 2015-05-07 独立行政法人海上技術安全研究所 疲労亀裂の進展抑制ペースト、進展抑制方法、進展検出ペースト、及び進展検出方法
WO2024013878A1 (fr) * 2022-07-13 2024-01-18 三菱電機株式会社 Dispositif d'inspection de fissure, système de surveillance de fissure et procédé d'inspection de fissure

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6069126B2 (ja) * 2013-08-01 2017-02-01 株式会社神戸製鋼所 疲労き裂進展抑制効果の評価方法
WO2020196299A1 (fr) * 2019-03-22 2020-10-01 ハリマ化成株式会社 Pâte métallique, procédé de liaison et procédé de production d'un corps lié

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005002782A1 (fr) * 2003-07-07 2005-01-13 National Maritime Research Institute Procede permettant d'arreter l'extension d'une fissure de fatigue, procede de detection de fissure de fatigue, et pate utilisee dans la mise en oeuvre desdits procedes
JP2009214254A (ja) * 2008-03-12 2009-09-24 Three Bond Co Ltd 疲労亀裂の検出・進展抑制方法及び構造体
WO2010137707A1 (fr) * 2009-05-28 2010-12-02 株式会社神戸製鋼所 Pâte pouvant réduire le taux de développement de fissure de fatigue d'un matériau métallique, et matériau métallique revêtu de la pâte

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1054006A1 (ru) * 1982-07-22 1983-11-15 Харьковский Ордена Ленина Авиационный Институт Им.Н.Е.Жуковского Способ предотвращени роста усталостных трещин в тонкостенных конструкци х
JPH04280455A (ja) * 1991-03-08 1992-10-06 Nkk Corp 半導体装置の製造方法
JP2840479B2 (ja) * 1991-05-10 1998-12-24 株式会社神戸製鋼所 疲労強度と疲労亀裂伝播抵抗の優れた高強度熱延鋼板の製造方法
JP4394996B2 (ja) * 2004-03-30 2010-01-06 新日本製鐵株式会社 耐脆性破壊発生特性に優れた溶接継手
US7451661B2 (en) * 2005-08-15 2008-11-18 The Boeing Company Friction stir welding load confirmation system
JP4735192B2 (ja) * 2005-10-28 2011-07-27 Ｊｆｅスチール株式会社 耐疲労き裂伝播特性に優れた高靭性鋼材

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005002782A1 (fr) * 2003-07-07 2005-01-13 National Maritime Research Institute Procede permettant d'arreter l'extension d'une fissure de fatigue, procede de detection de fissure de fatigue, et pate utilisee dans la mise en oeuvre desdits procedes
JP2009214254A (ja) * 2008-03-12 2009-09-24 Three Bond Co Ltd 疲労亀裂の検出・進展抑制方法及び構造体
WO2010137707A1 (fr) * 2009-05-28 2010-12-02 株式会社神戸製鋼所 Pâte pouvant réduire le taux de développement de fissure de fatigue d'un matériau métallique, et matériau métallique revêtu de la pâte

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ICHIHIKO TAKAHASHI ET AL.: "Restraint of fatigue crack propagation by wedge effect of fine particles", JOURNAL OF THE SOCIETY OF NAVAL ARCHITECTS OF JAPAN, vol. 12, no. 184, 1988, pages 361 - 367 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015085509A (ja) * 2013-09-26 2015-05-07 独立行政法人海上技術安全研究所 疲労亀裂の進展抑制ペースト、進展抑制方法、進展検出ペースト、及び進展検出方法
JP2018103357A (ja) * 2013-09-26 2018-07-05 国立研究開発法人 海上・港湾・航空技術研究所 疲労亀裂の進展抑制ペースト、進展抑制方法、進展検出ペースト、及び進展検出方法
WO2024013878A1 (fr) * 2022-07-13 2024-01-18 三菱電機株式会社 Dispositif d'inspection de fissure, système de surveillance de fissure et procédé d'inspection de fissure
JP7466798B1 (ja) 2022-07-13 2024-04-12 三菱電機株式会社 き裂検査装置、き裂監視システムおよびき裂検査方法

Also Published As

Publication number Publication date
JP5753528B2 (ja) 2015-07-22
CN103945977A (zh) 2014-07-23
KR101632125B1 (ko) 2016-06-20
KR20140079487A (ko) 2014-06-26
JP2013129057A (ja) 2013-07-04
CN103945977B (zh) 2016-07-13

Similar Documents

Publication Publication Date Title
Zhou et al. Identifying the significance of Sn addition on the tribological performance of Ti-based bulk metallic glass composites
WO2013077328A1 (fr) Pâte pour empêcher le développement de fissures de fatigue
JP7333934B2 (ja) 疲労亀裂の進展抑制ペースト、進展抑制方法、進展検出ペースト、及び進展検出方法
Neerukatti et al. Fatigue crack propagation under in‐phase and out‐of‐phase biaxial loading
Pilchak et al. Low ΔK faceted crack growth in titanium alloys
El-Naaman et al. Observations on mode I ductile tearing in sheet metals
Lee et al. Strength variation and cast defect distribution in metallic glasses
Zhu et al. Effect of microstructure on the fracture toughness of multi-phase high Nb-containing TiAl alloys
Peng et al. Study on bending fretting fatigue damages of 7075 aluminum alloy
Pramanik et al. Fracture and fatigue life of Al-based MMCs machined at different conditions
Fremy et al. Load path effect on fatigue crack propagation in I+ II+ III mixed mode conditions–Part 1: Experimental investigations
Bui et al. Fatigue crack deflection and branching behavior of low carbon steel under mechanically large grain condition
Wang et al. Size effects on the fatigue behavior of bulk metallic glasses
Yin et al. Machinability improvement of Inconel 718 through mechanochemical and heat transfer effects of coated surface-active thermal conductive mediums
Das et al. Mechanisms of material removal during erosion–corrosion of an Al–SiC particle composite
Jiang et al. Effect of applied angle on the microstructure evolution and mechanical properties of laser clad 3540 Fe/CeO2 coating assisted by in-situ ultrasonic vibration
Min et al. In situ observation of fatigue crack initiation and propagation behavior of a high-Nb TiAl alloy at 750 C
JP4852163B2 (ja) 金属材料の疲労き裂進展速度低下用粒子含有ペースト、および、そのペーストを塗布した金属材料
Trdan et al. High-cycle fatigue enhancement of dissimilar 2017A-T451/7075-T651 Al alloy joint fabricated by a single pass FSW without any post-processing
Sun et al. Welding parameter selection and short fatigue crack growth of dissimilar aluminum alloy friction stir welded joint
Zhang et al. Recrystallization and fatigue failure of DS alloy blades
Zhang et al. Anisotropic tensile properties of tungsten fiber reinforced Zr based metallic glass composites
Zhang et al. Cyclic deformation and fatigue crack propagation of a Zr-based bulk amorphous metal
Hu et al. Fretting fatigue behaviours of SiC reinforced aluminium alloy matrix composite and its monolithic alloy
Grell et al. Corrosion fatigue studies on a bulk glassy Zr-based alloy under three-point bending

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12851090

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 20147013177

Country of ref document: KR

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12851090

Country of ref document: EP

Kind code of ref document: A1