hyungi
8583465c58
- B-4 fetch_method='signal-only': 페이지 fetch 0 + summarize 스킵(검색 색인만, 맥미니 부하 0) + 본문 무절단(_entry_body — arXiv 초록 1.6K 보존). 다이제스트는 ai_summary NULL 제외 규칙으로 자연 배제. 레지스트리 오설정(page) 방어 가드. - 시드 9 소스 (전 URL 2026-06-11 live 검증): Bloomberg Markets/Technology(skip-video, 비디오 혼재 실측)·Economist Latest·Nikkei Asia(RDF — feedparser 네이티브, 분기 불요 fixture 박제)·ASME JPVT(site_1000037 실측 매핑)·arXiv 2종·IEEE Spectrum 2종(feed-full, 피드 description 이 전문 7.9~14K자 실측). - csb_collector: sitemap lastmod diff (weekly 월 06:50) — 워터마크(selector_override) + cap 40/회 점진 백필 + diff sanity 300 + 보고서 PDF(/assets/, recommendation 제외) → extract 파이프라인. 초기 일괄 = CLI --bulk. - api_standards_collector: 공지 목록 링크 파싱(실측 — 페이지 diff 아님, 상세 URL 10건/페이지) → 신규 상세만 ingest (monthly 5일 07:05). 초기 백필 = CLI --bulk. - ccps_collector: aiche.org 평문 403(UA 무관 실측) → playwright-fetcher 익명 컨텍스트 + referer 쿠키 승계 /download(base64) 신설로 월간 Beacon PDF (monthly 5일 07:20). 헤드리스 차단 시 CrawlBlocked → health 가시화 (르몽드 PARK 선례). - B-5 잔여: rdf/feed-reader-UA = 코드 분기 불요 실측 박제 (Economist 는 Archiver UA 200). table-strip/gn-redirect 는 해당 소스 미진입 — 백로그 유지. - 테스트 24건 신규 (fixture 9건 live 박제, economist/ieee 는 item trim) — 39 passed. - 마이그 327 단일 statement (PKM 트랙과 번호 경합 주의 — 327 본 트랙 선점). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
37 lines
5.1 KiB
XML
37 lines
5.1 KiB
XML
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<title>Journal of Pressure Vessel Technology Open Issues</title>
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<link>https://asmedigitalcollection.asme.org/pressurevesseltech</link>
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<description>
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</description>
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<language>en-us</language>
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<pubDate>Mon, 11 May 2026 00:00:00 GMT</pubDate>
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<lastBuildDate>Tue, 12 May 2026 00:00:37 GMT</lastBuildDate>
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<generator>Silverchair</generator>
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<managingEditor>ASMEDigitalCollection@asme.org</managingEditor>
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<webMaster>ASMEDigitalCollection@asme.org</webMaster>
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<item>
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<title>Research on Low-Temperature Mechanical Properties and Fracture Behavior of 09MnNiDR Steel Based on Small Punch Test</title>
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<link>https://asmedigitalcollection.asme.org/pressurevesseltech/article/148/5/051504/1232699/Research-on-Low-Temperature-Mechanical-Properties</link>
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<pubDate>Mon, 11 May 2026 00:00:00 GMT</pubDate>
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<description><span class="paragraphSection"><div class="boxTitle">Abstract</div>To develop a microdamage evaluation method applicable to in-service equipment under low-temperature conditions, this study systematically investigates the mechanical properties and fracture behavior of 09MnNiDR cryogenic steel over a broad temperature range from room temperature to −196 °C. The small punch test (SPT) technique is employed, supplemented by electron backscatter diffraction (EBSD) and scanning electron microscopy (SEM) for micromechanism analysis. Results indicate that under cryogenic conditions, dislocation slip is suppressed, leading to a more uniform distribution of plastic strain. Concurrently, the deformation process at low temperatures refines the grains within the plastic zone through mechanisms such as mechanical subdivision. As temperature decreases, the material strength increases linearly, exhibiting a significant cryogenic strengthening effect. The fracture mode transitions from ductile to brittle, with a ductile-to-brittle transition zone identified near −150 °C. An empirical formula based on SPT deformation energy is proposed to predict yield and true tensile strength, with prediction errors below 6%. By introducing a normalized energy parameter, an empirical correlation model is established between the SPT ductile-to-brittle transition temperature (DBTT) and the standard Charpy impact transition temperature. This study presents a viable methodology for safety assessment of in-service cryogenic pressure vessels through minimally invasive testing and performance prediction.</span></description>
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<prism:volume xmlns:prism="prism">148</prism:volume>
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<prism:number xmlns:prism="prism">5</prism:number>
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<prism:startingPage xmlns:prism="prism">051504</prism:startingPage>
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<prism:doi xmlns:prism="prism">10.1115/1.4071740</prism:doi>
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<guid>https://asmedigitalcollection.asme.org/pressurevesseltech/article/148/5/051504/1232699/Research-on-Low-Temperature-Mechanical-Properties</guid>
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</item>
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<item>
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<title>Improved Oxidation, Carburization Resistance and Creep Strength of Ethylene Pyrolysis Furnace Tubes at 1100 °C Through Aluminum and Tungsten Alloying</title>
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<link>https://asmedigitalcollection.asme.org/pressurevesseltech/article/148/4/041701/1232556/Improved-Oxidation-Carburization-Resistance-and</link>
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<pubDate>Mon, 11 May 2026 00:00:00 GMT</pubDate>
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<description><span class="paragraphSection"><div class="boxTitle">Abstract</div>The oxidation resistance, carburization resistance, and mechanical properties of ethylene pyrolysis furnace tube alloys modified by Al/Al-W alloying were comparatively investigated with conventional alloys using various microstructural characterization techniques and mechanical property testing methods. The Al-alloyed 29Cr44Ni4AlNb+microalloy (MA) exhibits superior oxidation and carburization resistance compared to conventional 25Cr35NiNb+MA and 35Cr45NiNb+MA alloys; however, its creep rupture life was significantly reduced. Further addition of W enhanced the solid solution strengthening effect, thereby improving high-temperature tensile properties and mitigating the detrimental impact of Al on creep performance. The creep rupture life of the Al/W-modified 27Cr44Ni5W3Al+MA alloy reached levels comparable to those of conventional alloys while retaining the beneficial effects of Al in improving oxidation and carburization resistance. Through alloying strategies, this study successfully achieved a balance between corrosion resistance and mechanical properties in ethylene pyrolysis furnace tube alloys, enabling them to withstand their harsh service conditions effectively.</span></description>
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<prism:volume xmlns:prism="prism">148</prism:volume>
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<prism:number xmlns:prism="prism">4</prism:number>
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<prism:startingPage xmlns:prism="prism">041701</prism:startingPage>
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<prism:doi xmlns:prism="prism">10.1115/1.4071682</prism:doi>
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<guid>https://asmedigitalcollection.asme.org/pressurevesseltech/article/148/4/041701/1232556/Improved-Oxidation-Carburization-Resistance-and</guid>
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