| JaLCDOI | 10.18926/15558 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_130.pdf |
| Author | Wada Tsutomu| Ohgishi Shinji| |
| Abstract | The method of the harmonic analysis of the human operator's characteristics by means of an analog computer is described. The human operator's characteristics in the closed loop system are described by vector locus. The human operator controls in response to the sine wave input so as to make constant the gain in the closed loop system. In accordance with the change of the input frequency, the operator changes his control action. Consequently the transfer function of the human operator's characteristics is too complex and difficult to be described by a linear element. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 130 |
| End Page | 133 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307865 |
| JaLCDOI | 10.18926/15559 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_134.pdf |
| Author | Ohta Mutsuo| |
| Abstract | Polycrystalline specimens of Al-30wt % Ag and Al-30wt % Zn alloys, which were quenched into water from the temperature of solution heat treatment, were annealed at L.T. aging temperatures or reversion temperatures so as to make them contain zones of nearly equal radii for each alloy and various concentrations of solute element in zones. These specimens were cold rolled exactly to 50%, and then annealed at L. T. aging temperatures for varying time. The state of zones and precipitates were investigated by X-ray small-angle scattering photographs. The results obtained were as follows: (1) The precipitation ofγ'-phase began earlier in the specimens of Al-Ag alloy annealed at L. T. aging temperature before cold rolling than in those specimens annealed at reversion temperatures before cold rolling when annealed at L. T. aging temperatures after cold rolling. (2) The rate of precipitation of Zn solid solution in Al-Zn alloy did not depend upon the annealing temperature before cold rolling when cold rolled specimens were annealed at L. T. aging temperature. (3) In Al-Ag alloy, the rate of disappearance of G. P. zones at L. T. aging temperature depends mainly upon the annealing temperature before cold rolling. On the other hand, in Al-Zn alloy, the rate of disappearance of G. P. zones at L. T. aging temperature does not depened upon the annealing temperature before cold rolling. (4) These results may be explained without contradiction considering the relation of structures between matrix and precipitates and the deformation stacking faults. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 134 |
| End Page | 137 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307180 |
| JaLCDOI | 10.18926/15560 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_138.pdf |
| Author | Ohta Mutsuo| Hashimoto Fumio| Tanimoto Tadashi| |
| Abstract | The changes of electrical resistivity of several alloys, that is, Al-10wt % Zn, Al-10wt % Zn-0.01wt % Cd, Al-10wt % Zn-0.01wt % In, Al-10wt % Zn-0.01wt % Sn, Al-3.0wt % Ag, Al-3.0wt % Ag-0.01wt % Cd, Al-3.0wt % Ag-0.01wt % In, Al3.0wt % Ag-0.0lwt % Sn, Al-3.0wt % Cu, Al-3.0wt % Cu-0.0lwt % Cd and Al-3.0wt % Cu-0.01wt % In, during isothermal aging after quenching were measured. The interactions between a vacancy and a cadmium, indium or tin atom in Al-10wt % Zn, Al-3.0wt % Ag and Al-3.0wt % Cu alloys were estimated. Binding energies obtained for Al-Zn, Al-Ag and Al-Cu base ternary alloys agree within experimental accuracy with each other. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 138 |
| End Page | 147 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307592 |
| JaLCDOI | 10.18926/15562 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_2_1.pdf |
| Author | Hirose Koji| Fujita Shiro| |
| Abstract | The friction coefficient for unsteady flow of fluids in pipes has not been studied so well. Usually the friction coefficient for steady flow has been used in place of one for unsteady flow. For a checkup of shis institution, in this paper, the pedulation of water column in an open vertical U-tabe is studied analytically and experimentally. The results of the numerical calculations coincide with the experimental results fairly well. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1967-04-01 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 4 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307938 |
| JaLCDOI | 10.18926/15564 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_2_5.pdf |
| Author | Yamada Toshiro| Kani Kouki| Nishijima Kunihiro| |
| Abstract | In order to clarify the sealing mechanism of an oil seal, it is necessary to know its fundamental properties and movement now in action. There are two subjects in this study. One is to reveal the temperature dependence of fundamental properties, mainly wringing force, average wringing pressure and lip contact width, and the other is to know the lip temperature now in action and to know how the lubrication is carried out at the lip portion. The measurements were carried out with our devised instruments for the former subject and with a thermocouple for the latter. A simple analysis of the lip temperature obtained was made in order to know a mechanism of the lubrication. The results indicate that with the rise of temperature of oil seal, the wringing force and the average wringing pressure decrease because of the reduction of rubber elastic modulus and of thermal expansion of spring, and the lip contact width hardly varies, and also indicate that under a constant temperature of lubricating oil, the lip temperature never rises so high as in the case of free rising of oil temperature, and that the fluid lubrication is carried out at the lip. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1967-04-01 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 5 |
| End Page | 11 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307333 |
| JaLCDOI | 10.18926/15566 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_2_12.pdf |
| Author | Mizumoto Hisao| |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1967-04-01 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 12 |
| End Page | 19 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307145 |
| JaLCDOI | 10.18926/15567 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_2_20.pdf |
| Author | Kikuchi Susumu| Matsuda Motoi| |
| Abstract | In this paper, we suggest the essentiality of the Learning Function in the total administration rather than the analytic management. Moreover, in order to manage the enterprise in wider and deeper markets, more excellent self-learning and high potentials become much indispensable for the trustworthy employers and employe. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1967-04-01 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 20 |
| End Page | 22 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307244 |
| JaLCDOI | 10.18926/15568 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_2_23.pdf |
| Author | Yoshii Tensho| Kikuchi Susumu| |
| Abstract | The problem of the optimal assignment of facilities to locaticns has been solved by J.W. Gavett and Normann V.Plyter. In their paper the branch and bound technique is used and for this purpose the distance matrix is transformed into the matrix whose diagonal compoents are zero. The purpose of this paper is to avoid such a transformation and the store of the distance matrix into the computer. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1967-04-01 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 23 |
| End Page | 25 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307907 |
| JaLCDOI | 10.18926/15570 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_2_26.pdf |
| Author | Osaki Hirokazu| Kikuchi Susumu| Matsuda Akira| |
| Abstract | There are a number of methods for measuring the fatigue because the measurement of this in the working hours is useful for analyzing the factors of fatigue and for the utilization of the labor management. In this paper, the fatigue of bus drivers who have experience of various number of years in some bus company is measured by the flicker and these values are analyzed by X(2) test or sign test and its control limit is determined. These are contributed to find a daily variation and to estimate the fatigue capacity, the degree of skill and what factors have influence on points which oversteps the limit line. It was found in this study that the limit line gets lower as the year of experience increases and the flicker values decrease in the forenoon. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1967-04-01 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 26 |
| End Page | 29 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307166 |
| JaLCDOI | 10.18926/15571 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_2_30.pdf |
| Author | Sayama Hayatoshi| Oi ko| |
| Abstract | The optimum temperature in a sequence of two stirred tanks is considered subject to inequality constraints. For an illustrative example this nonlinear programming problem is solved using the SUMT method of Fiacco and McCormick, which transforms the constrained problem into a sequence of unconstrained minimization problems. The results are presented for several cases, and are fairly good. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1967-04-01 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 30 |
| End Page | 34 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307563 |
| JaLCDOI | 10.18926/15573 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_2_35.pdf |
| Author | Wada Tsutomu| Ohgishi Shinji| |
| Abstract | An analysis is attempted of the human operator's responses to the sinusoidal input and the random input. The human operator's characteristics in the closed loop system are represented by the Bode diagram. This diagram shows that the human operator's response to the random input containing only those frequency components lower than 4 rad/s is almost in accordance with his response to the siunsoidal input of the same frequency range. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1967-04-01 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 35 |
| End Page | 38 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307455 |
| JaLCDOI | 10.18926/15574 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_2_39.pdf |
| Author | Ohta Mutsuo| Hashimoto Fumio| Tanimoto Tadashi| |
| Abstract | Binding energies between a vacancy and an atom of lead or gold were measured with the same method as those previously reported. The solid solubility of lead or gold in aluminium is very small, and the small quantity of precipitates are found along grain boundaries in this experiment. Therefore, it was not possible to determine the value of binding energy, but the lower limit of binding energy was estimated. The values of lower limit for Pb-Vacancy and Au-Vacancy binding energy were 0.38 eV and 0.35 eV, respectively. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1967-04-01 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 39 |
| End Page | 42 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307777 |
| JaLCDOI | 10.18926/15575 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_2_43.pdf |
| Author | Takahashi Teruo| Fujita Kozo| |
| Abstract | In this report, the analogies of the maximum allowable liquid and gas velocities in various countercurrent gas-liquid contactors of column type are considered analytically. That is, by plotting the flooding points of various columns in a gas-liquid separated coordinates, the similar curves have been obtained in each column. Because the difference of these curves is due to the shape of each column, the difference of each shape must be corrected and evaluated as a ahape factor. Then, by containing this factor in coordinate variables, various flooding points in each column may be correlated by a single curve. If this correlation curve is used, the flooding velocity can be estimated easily, and the maximum allowable liquid and gas velocities in these countercurrent contactors of column type can be compared. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1967-04-01 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 43 |
| End Page | 49 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307818 |
| JaLCDOI | 10.18926/15577 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_2_50.pdf |
| Author | Takahashi Teruo| Akagi Yasuharu| |
| Abstract | Recently various trays in which mass transfer operations are carried out have been developed, and the authors have designed one of the rotational-current tray which is designed to direct flow of ascending gas horizontally across the tray surface. In this report, as a fundamental study for mass transfer on this tray, flow mechanism and liquid holdup on the tray are considered experimentally. Experiments are carried out by water-air, methanol-water air and gricerinewater-air systems. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1967-04-01 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 50 |
| End Page | 54 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307498 |
| JaLCDOI | 10.18926/15578 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_2_55.pdf |
| Author | Takahashi Katsuaki| Yoshio Tetsuo| Miura Yoshinari| Hirai Taketsugu| |
| Abstract | The method for continuous measurement of the high temperature heat content, developed by W.Oelsen et al. and applied to the glasses by M.Tashiro, was examined and modified in some points. Relations between the temperature and heat contents referred to the standard temperature 25℃, were determined for the some glasses of R(2)O-SiO(2) system, and the specific heats as well as the entropies were calculated. Comparing the results, some views have been obtained relating to the effect of the species and content of alkali ions on the thermodynamic quantities of such glasses. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1967-04-01 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 55 |
| End Page | 61 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307355 |
| JaLCDOI | 10.18926/15579 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_2_62.pdf |
| Author | Hirai Taketsugu| Miura Yoshinari| Yoshio Tetsuo| Takahashi Katsuaki| |
| Abstract | Decomposition voltages of Na(2)O (30-50 mole % )-SiO(2) binary system were estimated at the temperature range of 700~1200℃ by commutator technique. As the experimental procedure, relations between electrolytic current and resulting polarization potential without ohmic loss were observed by 20 cps mechanical commutator, using Pt|Na(2)O-SiO(2)|Pt electrochemical system. Experimental decomposition voltages determined from above relationship were the value of 1.5~2.0 V at the temperature beyond about 800℃ with comparatively less reproducibility. Further investigations on the decomposition reaction mechanisms were made in reference to both a series of reversible decomposition voltages derived from thermodynamic calculations on the several proposed decomposition reactions and chemical equilibrium in vitreous silicates. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1967-04-01 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 62 |
| End Page | 67 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307847 |
| JaLCDOI | 10.18926/15580 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_2_68.pdf |
| Author | Takeda Akira| Nagae Hiroyuki| Torii Sigeru| |
| Abstract | The reaction of ethyl γ,γ-dialkylparaconate with aromatic aldehydes, i.e., benzaldehyde, anisaldehyde, p-chlorobenzaldehyde, and piperonal, has been investigated. The condensation took place at the α-position of the lactone ring. As the acidic components, α-benzylideneparaconic acids and α-benzylidene-β-alkylidensuccinic acids were obtained in 25-48% and 7-15% yields, respectively. From the neutral portions small amount of ethyl benzylideneparaconates were separated. During the course of distillation ethyl α-benzylideneparaconate was partially converted into α-benzylidene-γ-methy-γ-ethylbutyrolactone. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1967-04-01 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 68 |
| End Page | 73 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307999 |
| JaLCDOI | 10.18926/15582 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_2_74.pdf |
| Author | Takeda Akira| Kariya Yosihiro| Torii Sigeru| |
| Abstract | The ring opening of epoxide group in the reaction of ethyl ,β-alkylglycidates with sodiomalonate was observed mostly at the α-position of the glycidates. Ethyl β-ethylglycidate, however, on treatment with sodiomalonate gave ten percent of β-fission product, elucidated by NMR spectra. The reaction sequence provides a general preparative route to γ-alkylparaconic acids and their derivatives. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1967-04-01 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 74 |
| End Page | 79 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307843 |
| JaLCDOI | 10.18926/15583 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_2_80.pdf |
| Author | Takeda Akira| Wada Satosi| Uno Takaaki| |
| Abstract | The condensation of ethyl chloroarylpyruvate (Ⅰ) with ethyl malonate in the presence of sodium ethoxide afforded γ-aryl-α,β-dicarbethoxy-⊿(β),γ-butenolide. On the basis of the chemical and spectral evidences, the structure of the product (II) has been elucidated. This reaction provides new routes to α,β-dicarboalkoxy-γ-butyrolactones and/or to γ-ketocarboxylic acids. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1967-04-01 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 80 |
| End Page | 83 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307243 |
| JaLCDOI | 10.18926/19684 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_21_2_47.pdf |
| Author | Taniguchi, Takeo| Tsurumi Yasuo| |
| Abstract | The aim of this paper is to propose new automatic mesh generator for the finite element analysis of threedimensional structures consisted of plates and beams. The strategy of the proposed one is as followings; Firstly, subdivide the structure into two-dimensional and one-dimensional structural components. Secondly, generate mesh pattern for each of them, and finally combine them so that they reconstruct the original configuration. By using the proposed method the modeling of, for example, steel bridge structures for Finite Element Analysis is easily and also fastly completed. Some examples of the application of the proposed method are presented, and from the examination of the results further important informations for the design of better method are also given in this paper. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1987-03-05 |
| Volume | volume21 |
| Issue | issue2 |
| Start Page | 47 |
| End Page | 63 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002309157 |
