Journal of Japan Society for Safety Engineering
Online ISSN : 2424-0656
Print ISSN : 0570-4480
ISSN-L : 0570-4480
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Volume 28, Issue 1
JOURNAL OF JAPAN SOCIETY FOR SAFETY ENGINEERING_1989_1
Displaying 1-11 of 11 articles from this issue
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PROPOSAL FOR SAFETY
REVIEW
  • Properties　of　Pressure　Vessel　Test
    [in Japanese], [in Japanese], [in Japanese]
    1989 Volume 28 Issue 1 Pages 11-17
    Published: February 15, 1989
    Released on J-STAGE: October 31, 2017
    DOIhttps://doi.org/10.18943/safety.28.1_11
    JOURNAL FREE ACCESS
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    SeveraI　experiments　were　carried　out　in　order　to　examine　the　effect　of　several　variables　on　the　test　results and　to　compare　the　traditional　and　new　test　procedures，The　use　of　aluminum　cup　was　useful　for　keeping　the pressure　vessel　clear　and　gave　higher　pressure　vessel　limiting　diameter（PVLD）than　no　use　of　the　cap．The sample　size（5g　or10g）and　heating　rate　did　not　give　significant　difference　to　the　PVLD． The　PVLDs　which　were　determined　at　several　organizations　were　compared　and　found　to　be　scattered considerably．In　the　suggested　new　procedure　we　use　only　two　orifices　l　and9mmφ，and　tests　ten　times　for　each oτi丘ce．This　procedure　was　applied　to　the　AIBN　and　BPO　diluted　withα一aluminum　oxide　and　found　to　be reliable，

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  • In－Situ　Experiments　on　Fatigue　Crack　Growth　and　Acoustic　Emission of　Type 304 Austenitic　Stainless　Steels
    [in Japanese], [in Japanese]
    1989 Volume 28 Issue 1 Pages 18-25
    Published: February 15, 1989
    Released on J-STAGE: October 31, 2017
    DOIhttps://doi.org/10.18943/safety.28.1_18
    JOURNAL FREE ACCESS
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    In・situ　observations　of　fatigue　crack　growth　and　acoustic　emission　monitoring　have　been　carried　out　on　the type304austenitic　stainless　steels　using　the　newly　designed　test－apparatus　which　can　perform　a　fatigue　test　in the　vacuum・chamber　of　SEM， It　was　found　by　the　in・situ　experiments　that　the　crack　growth　rate　of　sensitized　specimens　in　the　vacuum chamber　were　slightly　accelerated　as　compared　with　that　of　solution　treated　ones、 The　combined　technique　of　the　sequentially　direct　observation　by　SEM　and　acoustic㎝ission　monitoring during　cyclic　Ioading　was　applied　to　study　crack　open　and　closure　behaviors　and　also　to　determine　the　cτack opening　load．Their　results　were　successful， With　comparedto　the　results　of　fractography，the　characteristics　of　amplitude　spectrum　distributions　of　AE sign＆ls　due　to　fatigue　crack　growth　were　related　to　the　feature　of　fracture　surface　and　the　fatigue　cracking micromechanisms.

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  • [title in Japanese]
    [in Japanese]
    1989 Volume 28 Issue 1 Pages 26-30
    Published: February 15, 1989
    Released on J-STAGE: October 31, 2017
    DOIhttps://doi.org/10.18943/safety.28.1_26
    JOURNAL FREE ACCESS
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    [in Japanese]
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TECHNICAL NOTE
TECHNICAL REPORT
SALOON
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