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Browsing Universitas Lambung Mangkurat by Author "Gapsari, Femiana"

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Hydroxyapatite Coating on Stainless Steel 316L using Flame Spray Technique

Gapsari, Femiana; Hidayati, NA; Setyarini, PH; PN, M. Alan; Subagyo, Rachmat; Andoko, A (IJE TRANSACTIONS B: Applications, 2021-02)

This study was a preliminary study on flame spray coating with hydroxyapatite (HAp). Coating is one of the technique to improve metal resistance to corrosion. In this study, flame spray coating using HAp was performed ...
Hydroxyapatite Coating on Stainless Steel 316L using Flame Spray Technique

Gapsari, Femiana; Hidayati, NA; Setyarini, PH; PN, M. Alan; Subagyo, Rachmat; Andoko, A (IJE TRANSACTIONS B: Applications, 2021-02)

This study was a preliminary study on flame spray coating with hydroxyapatite (HAp). Coating is one of the technique to improve metal resistance to corrosion. In this study, flame spray coating using HAp was performed ...
Modeling Analysis of the Effect of the Main Rollhoop Length on the Strength of Formula Student Chassis

Siswanto, Rudi; Subagyo, Rachmat; Isworo, Hajar; Gapsari, Femiana (Eastern-European Journal of Enterprise Technologies, 2019-08)

Шасі є дуже важливою частиною транспортного засобу, на якій будується весь кузов. Всі зовнішні навантаження транспортного засобу включають власну вагу, яку підтримує шасі. Проектування та аналіз шасі грають ...
MODELING ANALYSIS OF THE EFFECT OF THE MAIN ROLLHOOP LENGTH ON THE STRENGTH OF FORMULA STUDENT CHASSIS

Siswanto, Rudi; Subagyo, Rachmat; Isworo, Hajar; Gapsari, Femiana (Eastern-European Journal of Enterprise Technologies, 2019-08-15)

Шасі є дуже важливою частиною транспортно- го засобу, на якій будується весь кузов. Всі зовнішні навантаження транспортного засобу включають власну вагу, яку підтримує шасі. Проектування та аналіз шасі грають важливу ...
MODELING ANALYSIS OF THE EFFECT OF THE MAIN ROLLHOOP LENGTH ON THE STRENGTH OF FORMULA STUDENT CHASSIS

Siswanto, Rudi; Subagyo, Rachmat; Isworo, Hajar; Gapsari, Femiana (Eastern-European Journal of Enterprise Technologies, 2019-08-15)

Шасі є дуже важливою частиною транспортно- го засобу, на якій будується весь кузов. Всі зовнішні навантаження транспортного засобу включають власну вагу, яку підтримує шасі. Проектування та аналіз шасі грають важливу ...
MODELING ANALYSIS OF THE EFFECT OF THE MAIN ROLLHOOP LENGTH ON THE STRENGTH OF FORMULA STUDENT CHASSIS

Siswanto, Rudi; Subagyo, Rachmat; Isworo, Hajar; Gapsari, Femiana (Eastern-European Journal of Enterprise Technologies, 2019-08-15)

Шасі є дуже важливою частиною транспортно- го засобу, на якій будується весь кузов. Всі зовнішні навантаження транспортного засобу включають власну вагу, яку підтримує шасі. Проектування та аналіз шасі грають важливу ...
MODELING ANALYSIS OF THE EFFECT OF THE MAIN ROLLHOOP LENGTH ON THE STRENGTH OF FORMULA STUDENT CHASSIS

Siswanto, Rudi; Subagyo, Rachmat; Isworo, Hajar; Gapsari, Femiana (Eastern European Journal of Enterprise Technologies (EEJET), 2019-08-01)

Шасі є дуже важливою частиною транспортного засобу, на якій будується весь кузов. Всі зовнішні навантаження транспортного засобу включають власну вагу, яку підтримує шасі. Проектування та аналіз шасі грають ...
MODELING ANALYSIS OF THE EFFECT OF THE MAIN ROLLHOOP LENGTH ON THE STRENGTH OF FORMULA STUDENT CHASSIS

Siswanto, Rudi; Subagyo, Rachmat; Isworo, Hajar; Gapsari, Femiana (Eastern European Journal of Enterprise Technologies (EEJET), 2019-08-01)

Шасі є дуже важливою частиною транспортного засобу, на якій будується весь кузов. Всі зовнішні навантаження транспортного засобу включають власну вагу, яку підтримує шасі. Проектування та аналіз шасі грають ...
Modelling Analysis of The Effect of The Main Roll-Hoop Lengeth on Tha Strength of Formula Student Chassis

Siswanto, Rudi; Subagyo, Rachmat; Isworo, Hajar; Gapsari, Femiana (Eastern European Journal of Enterprise Technologies (EEJET), 2019-08-01)

Шасі є дуже важливою частиною транспортного засобу, на якій будується весь кузов. Всі зовнішні навантаження транспортного засобу включають власну вагу, яку підтримує шасі. Проектування та аналіз шасі грають ...
P r o p e r t i e s o f o r g a n i c a n d i n o r g a n i c f i l l e r h y b r i d i z a t i o n o n Timoho Fiber-reinforc ed polyester polymer compo sites

Gapsari, Femiana; Purnowidodo, Anindito; Setyarini, PH; Hidayatullah, Syarif; Suteja; Izzuddin, Hubby; Subagyo, Rachmat; Mavinkere Rangappa, Sanjay; Siengchin, Suchart (Polimer Composites, 2021-12-02)

Eco-friendly composite made of Timoho Fiber (TF) continuously developed to get the best performance to replace plastic-based synthetic fibers. This study focuses on investigating physical characteristics, mechanical ...
P r o p e r t i e s o f o r g a n i c a n d i n o r g a n i c f i l l e r h y b r i d i z a t i o n o n Timoho Fiber-reinforc ed polyester polymer compo sites

Gapsari, Femiana; Purnowidodo, Anindito; Setyarini, PH; Hidayatullah, Syarif; Suteja; Izzuddin, Hubby; Subagyo, Rachmat; Mavinkere Rangappa, Sanjay; Siengchin, Suchart (Polymer Compo sites, 2021-12-02)

Eco-friendly composite made of Timoho Fiber (TF) continuously developed to get the best performance to replace plastic-based synthetic fibers. This study focuses on investigating physical characteristics, mechanical ...
P r o p e r t i e s o f o r g a n i c a n d i n o r g a n i c f i l l e r h y b r i d i z a t i o n o n Timoho Fiber-reinforc ed polyester polymer compo sites

Gapsari, Femiana; Purnowidodo, Anindito; Setyarini, PH; Hidayatullah, Syarif; Suteja; Izzuddin, Hubby; Subagyo, Rachmat; Mavinkere Rangappa, Sanjay; Siengchin, Suchart (Polimer Composites, 2021-12-02)

Eco-friendly composite made of Timoho Fiber (TF) continuously developed to get the best performance to replace plastic-based synthetic fibers. This study focuses on investigating physical characteristics, mechanical ...
Peer Review-Modelling Analysis of The Effect of The Main Roll-Hoop Lengeth on Tha Strength of Formula Student Chassis

Siswanto, Rudi; Subagyo, Rachmat; Isworo, Hajar; Gapsari, Femiana (Eastern European Journal of Enterprise Technologies (EEJET), 2019-08)

Шасі є дуже важливою частиною транспортного засобу, на якій будується весь кузов. Всі зовнішні навантаження транспортного засобу включають власну вагу, яку підтримує шасі. Проектування та аналіз шасі грають ...
Physical and chemical mechanisms of hydrophobicity of nanoparticle membranes (Mg+Al2 O 3 )

Wahyudi; Subagyo, Rachmat; Gapsari, Femiana (Journal of Achievement in Material and Manufacturing Engineering, 2019-10)

Purpose: Investigate the hydrophobic, superhydrophobic and hydrophilic properties of Alumina (Al2 O 3 ) and Magnesium (Mg) nanoparticles. Design/methodology/approach: This research was conducted by SEM-EDX analysis of ...
Physical and chemical mechanisms of hydrophobicity of nanoparticle membranes (Mg+Al2 O 3 )

Wahyudi; Subagyo, Rachmat; Gapsari, Femiana (Journal of Achievement in Material and Manufacturing Engineering, 2019-10)

Purpose: Investigate the hydrophobic, superhydrophobic and hydrophilic properties of Alumina (Al2 O 3 ) and Magnesium (Mg) nanoparticles. Design/methodology/approach: This research was conducted by SEM-EDX analysis of ...
Physical and chemical mechanisms of hydrophobicity of nanoparticle membranes (Mg+Al2 O 3 ) Wahyudia , R. Subagyob,*, F. Gapsaric a Department of Mechanical Engineering, Faculty of Engineering,Universitas Muhammadiyah Yogyakarta, Brawijaya street, Kasihan, Bantul, Yogyakarta, 55183, Indonesia b Mechanical Engineering Department, Engineering Faculty, University Lambung Mangkurat, Jenderal Achmad Yani Street KM 35.5, Banjarbaru, South Kalimantan, 70714, Indonesia c Mechanical Engineering Department, Engineering Faculty, University Brawijaya, Veteran street No. 16, Malang, East Java, 65145, Indonesia * Corresponding e-mail address: rachmatsubagyo@ulm.ac.id ABSTRACT Purpose: Investigate the hydrophobic, superhydrophobic and hydrophilic properties of Alumina (Al2 O 3 ) and Magnesium (Mg) nanoparticles. Design/methodology/approach: This research was conducted by SEM-EDX analysis of Magnesium and Alumina nanoparticles, observation of gas bubbles when droplets of water contact with membrane surfaces, measurement of surface roughness and detection of Hydrogen gas production using Gas Chromatography. There are eleven compositions (Al2 O 3 :Mg) membranes used in this study, namely: (0:100; 10:90; 20:80; 30:70; 40:60; 50:50; 60:40; 70:30; 80:20; 90:10; and 100:0). Findings: Successfully found an alloy membrane between Alumina (Al2 O 3 ) and Magnesium (Mg) nanoparticles in the composition of Mg:Al2 O 3 (0:100%) having Hydrophobic properties; Mg:Al2 O 3 (50:50%) has Superhydrophobic properties and Mg:Al2 O 3 (100:0%) has hydrophilic properties. Three conditions occur when H2 O droplets come in contact with the membrane layer, namely: hydrophobic conditions when the trapped gas pressure is smaller than the droplet pressure. Superhydrophobic conditions when the trapped gas pressure is equal to the droplet pressure. Hydrophilic conditions occur when the trapped gas pressure is greater than the droplet pressure. Research limitations/implications: This research is limited to the hydrophobic nature of Nano Alumina (Al2 O 3 ) and Magnesium (Mg) membrane particles. Practical implications: Superhydrophobic properties are very suitable to be applied to membranes that are useful for destiny. Originality/value: The novelty of this study is to find the right mixture of nanoparticles of Alumina and Magnesium in a composition that is capable of creating hydrophobic, superhydrophobic and hydrophilic properties. Keywords: Hydrophobic, Superhydrophobic, Hydr

Wahyudi; Subagyo, Rachmat; Gapsari, Femiana (Journal of Achievement in Material and Manufacturing Engineering, 2019-10-02)

Purpose: Investigate the hydrophobic, superhydrophobic and hydrophilic properties of Alumina (Al2 O 3 ) and Magnesium (Mg) nanoparticles. Design/methodology/approach: This research was conducted by SEM-EDX analysis of ...

Browsing Universitas Lambung Mangkurat by Author "Gapsari, Femiana"

Browsing Universitas Lambung Mangkurat by Author "Gapsari, Femiana"

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