인적결합에 있어 사실혼과 연대적 결합체의 상관관계에 관한 고찰

임영수(Yeong-Su Lim) 한국가족법학회 2010 가족법연구 Vol.24 No.3

Currently, our society is showing the tendency of recognizing various forms of human bonding according to the rapid changes in various fields. With such changes, there is a tendency of considering the current concept of de facto marriage in the past form according to the definition of the ‘traditional de facto marriage’. As a result, by considering that the de facto marriage is included in the category of marriage, we have to think about whether it is possible to accept such changes related to the concept of de facto marriage. The current concept of de facto marriage, which is used in Korea, is based on the standard of realistic marriage life with the acceptance of the principle of legal marriage with typical conditions. Such a concept has been developed, since the people who are involved in the relationship are required to notify their relationship through the official government document in order to secure clarity and legal security for the marriage relationship. If such a concept for the de facto marriage is regarded as the ‘traditional de facto marriage’, the human bonding which is regarded as the so-called chronological bonding can be sometimes defined as the ‘modern de facto marriage’ with the expansion of the current concept of de facto marriage. Furthermore, the chronological bonding can be defined as either the heterosexual bonding which provides the actual marriage life without the intention of marriage or the homosexual bonding which provides the actual body but has not been systematically protected. In particular, the form of homosexual bonding is no longer a prohibited topic. It is currently considered for protection in regard to the human right, dignity and equality. People now think more about the right to decide their own genders and adoption as well as the freedom related to marriage and divorce. As a result, the chronological bonding can be regarded as the concept which is more complicated than the current concept of de facto marriage. Until now, we have understood and recognized that the de facto marriage is correlated with the legal marriage based on the standard of legal marriage for the human bonding in our society, because we have believed that the people involved in the de facto marriage have the intention of actively accomplishing legitimacy and legality for marriage and possessing the related benefit. However, it is necessary for us to think and refine deeply about the correlation between the chronological bonding and the legal marriage, because the legal form of the chronological bonding has been classified into the marriage bonding which is largely recognized as a complete form of marriage and the non-marriage bonding. Also, according to the characteristics of the above bonding, it seems that there is a correlation with the characteristics of the legal marriage or the de facto marriage in terms of similarities. It has been argued whether the consideration of the correlation between the de facto marriage and the non-marriage bonding can be interpreted either that the non-marriage bonding which is not included in the category of legal marriage can be regarded as the human bonding in an independent form, or that it can be regarded as a form of de facto marriage due to the obstacle related to marriage. Therefore, this paper focuses on the semantic aspect of the correlation between the de facto marriage and the chronological bonding based on the legal marriage in regard to the human bonding instead of finding a clear result for the above topic.

Thin Si wafer substrate bonding and de-bonding below 250 °C for the monolithic 3D integration

Jeon, Yu-Rim,Han, Hoonhee,Choi, Changhwan Elsevier 2018 Sensors and actuators. A Physical Vol.281 No.-

<P><B>Abstract</B></P> <P>We studied low temperature (<250 °C) transfer of 8 in. full sized thin Si wafer layer on the SiO<SUB>2</SUB>/Si substrate without any wafer flip up/down and subsequent high temperature process. This method includes temporary bonding of carrier wafer with bonding material at 200 °C, grinding or etching substrate, and transfer layer at 250 °C. Thickness values of transferred thin Si layer using bulk Si and silicon-on-insulator (SOI) wafer substrates are 87 μm and 216 nm on the SiO<SUB>2</SUB>/Si substrate, respectively. Plasma treatment under N<SUB>2</SUB> and O<SUB>2</SUB> mixture ambient assisting to form hydrophilic surface was carried out during bonding process and enhanced bonding strength was confirmed by contact angle measurement. Our wafer bonding process can be feasible to form various monolithic 3D devices due to thin Si layer transfer and low temperature process.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Bonding and de-bonding of thin Si layer was processed at low temperature (<250 °C). </LI> <LI> Unlike conventional wafer bonding such as smart-cut based SOI or similar substrate, wafer flip-up/down is not needed. </LI> <LI> Hydrophilic surface was formed via plasma treatment instead of high temperature bonding annealing. </LI> </UL> </P>

고압 다이캐스팅법으로 제조한 편상흑연주철-알루미늄 이종소재의 계면접합특성에 미치는 탈흑연 열처리의 영향

양지바름 ( Ji-ba-reum Yang ),김태형 ( Taehyeong Kim ),정재헌 ( Jaeheon Jeong ),김상우 ( Sangwoo Kim ),김윤준 ( Yoonjun Kim ),김동응 ( Dongeung Kim ),신제식 ( Jesik Shin ) 한국주조공학회 2021 한국주조공학회지 Vol.41 No.6

본 연구에서는 주철-알루미늄 이종재료의 계면결합강도를 향상시키기 위하여 탈흑연 열처리를 통해 주철 표면에서 일정 깊이까지의 흑연을 제거하였다. 열처리 시간이 증가함에 따라 흑연이 제거되는 깊이는 증가하였으며, 열처리 시간과 깊이 사이에 선형 관계가 나타났다. 일정 깊이의 흑연이 제거된 주철에 알루미늄을 다이캐스팅 공법으로 주조접합하여 주철에서 흑연이 제거된 공간을 알루미늄으로 채운 후, 계면 반응 및 알루미늄 침투 깊이를 조사하고 계면접합강도를 평가하였다. 다이캐스팅 공법을 통한 알루미늄은 탈흑연 열처리된 주철 표면에서 일정한 깊이까지 채워지는 것으로 확인되었으며, 주철-알루미늄 계면에 금속간화합물이 생성되지는 않은 것으로 확인되었다. 계면접합강도는 열처리 시간과는 큰 관계없이 90MPa 수준의 접합강도를 나타내었으며 이는 탈흑연열처리를 하지 않은 소재의 접합강도 12MPa에 비해 매우 높은 강도이며, 주철의 탈흑연 영역에서 고압 다이캐스팅 공정에 의해 침투된 알루미늄 용탕이 응고되면서 언더컷 구조의 기계적 결합에 의한 것으로 생각된다. In this study, to improve the interfacial bond strength of cast iron-aluminum dissimilar materials, graphite was removed to a certain depth from the cast iron surface through de-graphitization heat treatment. As the heat treatment time increased, the depth at which graphite was removed increased, showing a linear relationship between the heat treatment time and depth. Aluminum was filled to a certain depth on the de-graphitized cast iron surface through die-casting method, and no intermetallic compounds were formed on the cast iron-aluminum interface. The interfacial bonding strength showed a value of 90 MPa regardless of the heat treatment time, which is very high compared to the 12MPa bonding strength of the material without de-graphitization heat treatment. This result is thought to be due to the mechanical bonding of the undercut structure as the liquid aluminum, penetrated by the high pressure die-casting process, solidified in the de-graphitized region of the cast iron.

Flexural Strength of RC Beam Strengthened by Partially De-bonded Near Surface-Mounted FRP Strip

Soo-yeon Seo,Ki-bong Choi,Young-sun Kwon,Kang-seok Lee 한국콘크리트학회 2016 International Journal of Concrete Structures and M Vol.10 No.2

This paper presents an experimental work to study the flexural strength of reinforced concrete (RC) beams strengthened by partially de-bonded near surface-mounted (NSM) fiber reinforced polymer (FRP) strip with various de-bonded length. Especially, considering high anchorage capacity at end of a FRP strip, the effect of de-bonded region at a central part was investigated. In order to check the improvement of strength or deformation capacity when the bonded surface area only increased without changing the FRP area, single and triple lines of FRP were planned. In addition, the flexural strength of the RC member strengthened by a partially de-bonded NSM FRP strip was evaluated by using the existing researchers’ strength equation to predict the flexural strength after retrofit. From the study, it was found that where de-bonded region exists in the central part of a flexural member, the deformation capacity of the member is expected to be improved, because FRP strain is not to be concentrated on the center but to be extended uniformly in the de-bonded region. Where NSM FRP strips are distributed in triple lines, a relatively high strength can be exerted due to the increase of bond strength in the anchorage.

Flexural Strength of RC Beam Strengthened by Partially De-bonded Near Surface-Mounted FRP Strip

서수연,최기봉,권영순,이강석 한국콘크리트학회 2016 International Journal of Concrete Structures and M Vol.10 No.2

This paper presents an experimental work to study the flexural strength of reinforced concrete (RC) beamsstrengthened by partially de-bonded near surface-mounted (NSM) fiber reinforced polymer (FRP) strip with various de-bondedlength. Especially, considering high anchorage capacity at end of a FRP strip, the effect of de-bonded region at a central part wasinvestigated. In order to check the improvement of strength or deformation capacity when the bonded surface area only increasedwithout changing the FRP area, single and triple lines of FRP were planned. In addition, the flexural strength of the RC memberstrengthened by a partially de-bonded NSM FRP strip was evaluated by using the existing researchers’ strength equation to predictthe flexural strength after retrofit. From the study, it was found that where de-bonded region exists in the central part of a flexuralmember, the deformation capacity of the member is expected to be improved, because FRP strain is not to be concentrated on thecenter but to be extended uniformly in the de-bonded region. Where NSM FRP strips are distributed in triple lines, a relatively highstrength can be exerted due to the increase of bond strength in the anchorage.

Flexural Strength of RC Beam Strengthened by Partially De-bonded Near Surface-Mounted FRP Strip

Seo, Soo-yeon,Choi, Ki-bong,Kwon, Young-sun,Lee, Kang-seok Korea Concrete Institute 2016 International Journal of Concrete Structures and M Vol.10 No.2

This paper presents an experimental work to study the flexural strength of reinforced concrete (RC) beams strengthened by partially de-bonded near surface-mounted (NSM) fiber reinforced polymer (FRP) strip with various de-bonded length. Especially, considering high anchorage capacity at end of a FRP strip, the effect of de-bonded region at a central part was investigated. In order to check the improvement of strength or deformation capacity when the bonded surface area only increased without changing the FRP area, single and triple lines of FRP were planned. In addition, the flexural strength of the RC member strengthened by a partially de-bonded NSM FRP strip was evaluated by using the existing researchers' strength equation to predict the flexural strength after retrofit. From the study, it was found that where de-bonded region exists in the central part of a flexural member, the deformation capacity of the member is expected to be improved, because FRP strain is not to be concentrated on the center but to be extended uniformly in the de-bonded region. Where NSM FRP strips are distributed in triple lines, a relatively high strength can be exerted due to the increase of bond strength in the anchorage.

High-Density Diffusion Barrier to Improve Thermal Stability of Temporary Bonding De-Bonding (TBDB) System

김유손,임성갑 한국공업화학회 2021 한국공업화학회 연구논문 초록집 Vol.2021 No.1

Analysis of core shear stress in welded deformable sandwich plates to prevent de-bonding failure during U-bending

Seong, D.Y.,Jung, C.G.,Yang, D.Y.,Ahn, J.,Na, S.J.,Chung, W.J.,Kim, J.H. Elsevier 2010 Journal of materials processing technology Vol.210 No.9

In this work, a multi-point resistance welding process was employed as a bonding mechanism for deformable sandwich plates with sheared dimple cores to improve productivity. During U-bending, a de-bonding failure occurred due to the shear deformation of the core. An analytic study that investigated the bending mechanism was carried out to determine the control parameter of core shear stress. The analytic estimation revealed that the shear stress of the core could be reduced drastically by increasing the clearance. In addition, from the analysis of the de-bonding failure, the de-bonding behavior with respect to clearance could be effectively predicted. The fabricated sandwich plates could be bent without failure when the clearance was larger than the thickness of the sandwich plate by three times.

Bond behavior between concrete and prefabricated Ultra High-Performance Fiber-Reinforced Concrete (UHPFRC) plates

Walid Mansour,Mohammed A. Sakr,Ayman A. Seleemah,Bassam A. Tayeh,Tarek M. Khalifa 국제구조공학회 2022 Structural Engineering and Mechanics, An Int'l Jou Vol.81 No.3

Externally bonded ultrahigh performance fiber-reinforced concrete (UHPFRC) is commonly used as a strengthening material for reinforced concrete (RC) structures. This study reports the results of an experimental program investigating the bonding behavior between concrete and prefabricated UHPFRC plates. The overall experimental program is consisting of five RC specimens, which are strengthened using the different lengths and widths of prefabricated UHPFRC plates. These specimens were analyzed using the pull-pull double-shear test. The performance of each strengthened specimen is presented, discussed and compared in terms of failure mode, maximum load, load-slip relationship, fracture energy and strain distribution. Specimen C- 25-160-300 which bonded along the whole width of 160 mm recorded the highest maximum load (109.2 kN) among all the analysed specimens. Moreover, a 3D numerical finite element model (FEM) is proposed to simulate the bond behavior between concrete and UHPFRC plates. Moreover, this study reviews the analytical models that can predict the relationship between the maximum bond stress and slip for strengthened concrete elements. The proposed FEM is verified against the experimental program and then used to test 36 RC specimens strengthened with prefabricated UHPFRC plates with different concrete grades and UHPFRC plate widths. The obtained results together with the review of analytical models helped in the formation of a design equation for estimating the bond stress between concrete and prefabricated UHPFRC plates.

웨이퍼 본딩장비의 균일압 분석에 관한 연구

이재학(J. H. Lee),송준엽(J. Y. Song),김형준(H. J. Kim),김승만(S.M. Kim),하태호(T. H. Ha),이창우(C. W. Lee) 한국정밀공학회 2014 한국정밀공학회 학술발표대회 논문집 Vol.2014 No.5월