The following results were obtained from the study of anodic treatment on aluminum or aluminum alloys in the mixed solution of aliphatic acid, sulfamic acid and sulfuric acid:
1. Appropriate bath composition was of 25-30g/l of tartaric acid, 100-110g/l of sulfamic acid and 5-6g/l of sulfuric acid, with which fairly stable anodizing was possible.
2. The bath of the said composition, like that of prevailing mixtures of aromatic and sulfuric acid, produced various colors such as gold, amber, bronze, black, etc. according to the control of anodizing conditions and to the selection of aluminum or aluminum alloys, furthermore its cost was lower.
3. Dissolved aluminum amount in the bath had significant effects on the color value, and it was necessary to maintain the amount within a range of 0-1g/l.
4. Mean hardness of the cross section of the coating obtained under the condition of 2-3A/dm² of current density, 50-60V of maximum voltage and 25°C of bath temperature, was 650HmV; despite the room temperature-anodizing the hardness was thus high.
5. In general, a bath temperature of a little over 20°C was recommendable, and adjusting the composition of the mixed solution seemed to permit satisfactory work even in a higher anodizing temperature such as 30-35°C.

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塗膜の劣化は、紫外線と酸素が相互作用して進行するとされている。光エネルギーが作用すると塗膜の分子結合部にラジカルを生成する反応が連鎖的に発生し塗膜が徐々に分解する。この際に、ラジカルを安定な物質に変換することで劣化を抑えるものがハルスに代表される光安定剤である。本報告では、光安定剤を樹脂骨格に組み込んだ樹脂に無機成分を複合したセラミック複合ハルスハイブリッド樹脂塗料の各種性能試験結果について、ふっ素樹脂系塗料及びウレタン樹脂系塗料の性能試験結果と比較したところ、屋外建材に要求される性能を十分に満足していることが確認されたことを報告する。

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Shake table tests were conducted to examine the seismic performance of unit houses (prefabricated metal houses). The specimens comprised 4 unit-house units connected vertically and horizontally. After experiencing the JMA Kobe record twice, welded connections at the base beam had fractured, and local buckling had occurred in some beams. Bolted beam-to-column connections dissipated substantial energy by slipping repeatedly. Non-structural wall panels were damaged around openings and near columns. Nonetheless the specimens exhibited excellent performance beyond the current Japanese code requirements for ordinary, non-temporary buildings

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A series of tests for an unit-type curtain wall system were conducted in order to develop (a) a seismic monitoring technology installed in curtain wall systems and (b) a numerical model representing the seismic behaviors of curtain wall systems. A gyro sensor was adopted to assess the rotation distributions of the mullion. This instrumentation demonstrated the bending deformation distributions of the mullion. A numerical model focusing on the in-plane direction was developed by beam and 1-D spring elements. Regarding the mullion deformations, the numerical analysis of the proposed model evaluated the test results within an error of about 10%.

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Further shake table tests were conducted to examine the seismic performance of unit houses (prefabricated metal houses). A specimen comprising 4 unit-house units connected vertically and horizontally was subjected repeatedly in the long-side direction to the JMA Kobe record. The nonstructural, external wall panels increased the strength of the specimen twofold. The energy dissipated by repeated slipping of the slip-critical bolted connections equaled 88% of the total energy dissipated by the structural frame.

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