1,725,964 research outputs found
Block Card 5059 Avonhurst Road
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: Split-Level Style | 5059 Avonhurst Road (Toledo, Ohio) | Dwelling | Grandview Woods Addition (Toledo, Ohio) | Trilby Area (Toledo, Ohio)
Block Card 5059 Ancil Road
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: cabins | 5059 Ancil Road (Toledo, Ohio) | Dwelling | Westhaven First Addition (Toledo, Ohio) | Reynolds Corners Area (Toledo, Ohio
Block Card 5059 Egger Road
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: 5059 Egger Road (Toledo, Ohio) | Dwelling | Westhaven First Addition (Toledo, Ohio) | Reynolds Corners Area (Toledo, Ohio) | Cape Cod Styl
Block Card 5059 Oldham Drive
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: dwelling | 5059 Oldham Drive (Toledo, Ohio) | Ranch houses | Colonial Village Plat Two | Greenwood Area (Toledo, Ohio) | West Toledo (Toledo, Ohio
Mechanical properties of 5083, 5059 and 7020 aluminium alloys and their joints welded by MIG
No full textThe article presents the research results on the mechanical properties of aluminum alloy 7020 and its MIG welded joints. For comparison alloy 5083 - the most currently used in shipbuilding alloy was chosen as well as 5059 -the new high-strength alloy. Besides the native material alloys there were investigated their joints welded by MIG -the same method as alloy 7020. Welding parameters used for the connection of the sheets made of 7020, 5083 and 5059 alloys were presented. Metallographic analysis showed the correct construction of structural bonded joints. The arc welding method - MIG is the most common method of joining aluminum alloys used in shipbuilding. It replaces the TIG method of providing equally high quality of joints with a much higher performance. The research was carried out using a static tensile test in accordance with the requirements of the Polish Standard PN-EN 10002:2004. Flat samples cut perpendicular to the direction of rolling were used. The research was conducted at the temperature of + 20 centigrade. The 7020 alloy has higher strength properties then alloys: 5083 and 5059. The yield stress is higher by 14.8% compared to 5083 alloy, and by 11.7% compared to the alloy 5059. Plastic properties of an alloy 7020 are the lowest, but with reserves meet the requirements of classification societies. The joints welded by MIG of 7020 alloy have higher strength properties then joints of alloys: 5083 and 5059. Plastic properties of alloy 7020 compared to 5083 alloy are smaller and at the same level as the connector alloy 5059
Properties of AW 5059 aluminium alloy joints welded by mig and Friction Stir Welding (FSW)
No full textThe article presents the results of the mechanical properties of aluminium alloy AW 5059 [AlMg5.5Zn] welded by
MIG and friction stir welding FSW. Friction Stir Welding (FSW) – a new technology can be successfully used for butt
welding of different types of aluminium alloy sheets. Research results on stress corrosion cracking for the AW 5059
alloy welded joints are presented. Stress corrosion cracking was examined via the slow-strain-rate-testing (SSRT)
according to EN ISO 7539-7. The following parameters were measured: time-to-failure, obtained max. load, strain
energy (the diagram surface under the stress-elongation curve), relative elongation of the specimen, tensile stress and
reduction-in-area. The fractures were analysis by scanning electron microscope of Philips XL 30 type. Tests were
carried out in the air and in a 3.5% water solution of NaCl – artificial sea water.
On the basis of obtained test results, it can be said that 5059 alloy joints welded by FSW are resistant to stress
corrosion in sea water. Tests have shown that the 5059 alloy, welded by FSW, has superior strength properties
compared to the FSW 5083 alloy, along with comparable, good resistance to stress corrosion. Original value are
received results of the mechanical and corrosion properties of a new method friction stir welding used for joining
AW 5059 alloy sheets
Mechanical properties of 5083, 5059 and 7020 aluminium alloys and their joints welded by FSW
No full textThe article presents the research results on the mechanical properties of aluminum alloy 7020 and its friction stir
welded (FSW) joints. For comparison alloy 5083 – the most currently used in shipbuilding alloy was chosen as well as
5059 - the new high-strength alloy. Besides the native material alloys there were investigated their joints welded by
FSW - the same method as alloy 7020. Welding parameters used for the connection of the sheets made of 7020, 5083
and 5059 alloys were presented. Metallographic analysis showed the correct construction of structural bonded joints.
Friction Stir Welding (FSW) – a new technology can be successfully used for butt welding of different types of
aluminum alloy sheets. FSW method can be an alternative to traditional arc welding methods i.e. MIG or TIG. The
research was carried out using a static tensile test in accordance with the requirements of the Polish Standards PNEN
ISO 4136:2011 and PN-EN ISO 6892-1:2010. Flat samples cut perpendicular to the direction of rolling were
used. The research was conducted at the temperature of + 20ºC.
The 7020 alloy has higher strength properties then alloys: 5083 and 5059. The yield stress is higher by 14.8%
compared to 5083 alloy, and by 11.7% compared to the alloy 5059. Plastic properties of an alloy 7020 are the lowest,
but with reserves meet the requirements of classification societies. The joints welded by FSW of 7020 alloy have
higher strength properties then joints of alloys: 5083 and 5059. The yield stress achieves the highest value for alloy
7020 and is 24.2% higher than for 5083 alloy and 11.5% for the 5059 alloy. Despite the strength properties also
plastic properties are best for 7020 alloy joints
De Wet openbaarheid van bestuur
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Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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