Hasil Pencarian  ::  Simpan CSV :: Kembali

"This book deals with the most recent numerical modeling of adhesive joints. Advances in damage mechanics and extended finite element method are described in the context of the finite element method with examples of application. The book also introduces the classical continuum mechanics and fracture mechanics approach and discusses the boundary element method and the finite difference method with indication of the cases they are most adapted to. At the moment there a no numerical technique that can solve any problem and the analyst needs to be aware of the limitations involved in each case."

"Latar Belakang: Kepercayaan diri individu dapat dilihat melalui aspek psikososial yang memiliki ketergantungan besar terhadap penampilan dentofasial. Perawatan restorasi gigi memiliki dampak positif dalam meningkatkan kepercayaan diri individu. Sistem adhesif adalah material yang dapat menyatukan dua permukaan yang berbeda, dalam hal ini permukaan gigi dan bahan restorasi. Pemahaman yang tepat dalam penggunaan sistem adhesif sangat krusial dalam keberhasilan perawatan restorasi gigi. Penggunaan adhesif sudah umum di kalangan dokter gigi yang di Indonesia, tetapi belum ditemukan penelitian yang mengevaluasi pemahaman dokter gigi di IKORGI Cabang Jakarta Pusat terhadap penggunaan sistem adhesif. Tujuan: Penelitian ini bertujuan untuk mengetahui pemahaman dokter gigi mengenai penggunaan sistem adhesif saat prosedur restoratif dan hubungannya terhadap rentang tahun kelulusan, sumber informasi, dan lokasi selama kerja praktik. Metode: Penelitian ini merupakan penelitian deskriptif dengan desain studi potong lintang (cross-sectional). Dilakukan secara daring dengan menggunakan google form selama November 2022 – Januari 2023. Hasil: Responden penelitian didominasi oleh responden berjenis kelamin perempuan dengan rentang waktu kelulusan 0-5 tahun sejak tahun kelulusan. Pemahaman responden mengenai sistem adhesif sudah cukup baik, dilihat dari skor maksimum responden adalah 4,25. Responden penelitian ini mayoritas paham terhadap protokol, tetapi menyesuaikan dengan ketersediaan produk adhesif dan isolasi gigi yang ada di tempat kerja praktik. Kesimpulan: Pemahaman dokter gigi di IKORGI cabang Jakarta Pusat sudah baik, meskipun masih ditemukan perbedaan bermakna antara beberapa variabel penelitian.

---

Background: An Individual’s confidence can be seen through psychosocial aspects that have a large dependency on their dentofacial appearance. Dental restoration treatment has a positive impact on improving an individual’s self-confidence. An adhesive system is a material that bonds two different surfaces, which in this case the tooth surface and the restoration material. Proper understanding of the use of adhesive systems is crucial to the success of dental restoration treatment. Adhesives systems is common among dentists in Indonesia, but no research has been found that evaluates the knowledge of dentists in IKORGI Branch of Central Jakarta on the use of adhesive systems. Objective: Aims of this study to determine dentists' understanding of the use of adhesive systems during restorative procedures and its relationship to the range of years of graduation, sources of information, and location during practical work. Methods: This research is a descriptive study with a cross-sectional study design. It was executed online using “google form” during November 2022 - January 2023. Results: The research respondents were dominated by female respondents with a range of 0-5 years since graduation. The respondents understood the adhesive system quite well, as seen from the maximum score of the respondents was 4.25. Most respondents in this study understood the protocol but adjusted to the availability of adhesive products and dental insulation in the practical workplace. Conclusion: The understanding of dentists in the Central Jakarta branch of IKORGI is good, although there are some significant differences between the research variables studied."

"This 2nd edition is a complete revision with an update of the methods that have been investigated recently and that are now fully accepted by the adhesion community. Themes that are now treated in more detail include for example hybrid adhesives used for automotive applications, ecofriendly surface treatments, damage mechanics, joint durability prediction and functionally graded joints. There is also a new chapter related to the application of adhesives in the oil industry. Besides these content changes, there has been a complete revision of all chapters in terms of text, figures, tables and references for a more didactic character of this reference book.The Handbook of Adhesion Technology is intended to be the definitive reference in the field. Essential information is provided for all those concerned with adhesion, which is a phenomenon of interest in diverse scientific disciplines and of importance in a wide range of technologies. Therefore, this book includes the background science (physics, chemistry and materials science), engineering aspects and industry-specific applications. It is arranged in a user-friendly format with ten main sections: theory of adhesion, surface treatments, adhesive and sealant materials, testing of adhesive properties, joint design, durability, manufacture, quality control, applications and emerging areas. Each section contains about five chapters written by internationally renowned authors who are authorities in their fields.This book offers a quick, but authoritative, description of topics in the field of adhesion and the practical use of adhesives and sealants. Scientists and engineers of many different backgrounds who need to have an understanding of various aspects of adhesion technology will find it highly valuable. These will include those working in research or design, as well as others involved with marketing services. Graduate students in materials, processes and manufacturing will also want to consult it."

"It is commonly accepted that the majority of engineering failures happen due to fatigue or fracture phenomena. Adhesive bonding is a prevailing joining technique, widely used for critical connections in composite structures. However, the lack of knowledge regarding fatigue and fracture behaviour, and the shortage of tools for credible fatigue design, hinders the potential benefits of adhesively bonded joints. The demand for reliable and safe structures necessitates deep knowledge in this area in order to avoid catastrophic structural failures.This book reviews recent research in the field of fatigue and fracture of adhesively-bonded composite joints. The first part of the book discusses the experimental investigation of the reliability of adhesively-bonded composite joints, current research on understanding damage mechanisms, fatigue and fracture, durability and ageing as well as implications for design. The second part of the book covers the modelling of bond performance and failure mechanisms in different loading conditions."

"Baja Tahan Karat 316L merupakan salah satu varian austenitic stainless steel yang memiliki aplikasi cukup beragam dan banyak digunakan pada infrastruktur lepas pantai dikarenakan memiliki ketahanan korosi yang baik. Akan tetapi pada penggunaannya baja tahan karat 316L memiliki kemungkinan untuk terjadi korosi. Korosi pada logam merupakan salah satu hal yang tidak dapat dihindari dan seringkali menjadi penyebab utama kegagalan dalam berbagai industri. Salah satunya yaitu korosi celah yang merupakan korosi yang cukup sulit untuk di deteksi sampai akhirnya terjadi kerusakan. Salah satu pencegahannya yaitu dengan melakukan pengujian proteksi katodik anoda korban pada baja, dimana cara kerja dan sumber arus yang digunakan berasal dari reaksi galvanik anoda tersebut. Pengujian-pengujian yang dilakukan pada penelitian ini, antara lain yaitu pengujian polarisasi linear dan proteksi katodik anoda korban. Pengujian-pengujian tersebut menunjukan ketahanan korosi celah yang baik pada baja tahan karat 316L.

---

316L stainless steel is one of the austenitic stainless steel variants that has quite variety of applications and widely used in offshore infrastructure because has a good corrosion resistance. However the use of 316L stainless steel has the possibility to corrosion. Corrosion of metals is something that cannot be avoided and is often the main cause of failure in various industries. One of them is Crevice corrosion, which is corrosion that difficult to be detected before failure starts to happen. One of the prevention is using sacrificial anode protection on the steel, where the working method and current source used from the galvanic reaction of the anode. Several testings, such as linear polarization and sacrificial anode protection are conducted. They show a good crevice resistance of 316L stainless steel."