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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Teknik IJOG : Indonesian Journal on Geoscience Journal of Engineering and Technological Sciences Jurnal HPJI (Himpunan Pengembangan Jalan Indonesia) Teknisia Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Jurnal Teknik Sipil Teras Jurnal Potensi : Jurnal Sipil Politeknik Wikrama Parahita : Jurnal Pengabdian Masyarakat JTERA (Jurnal Teknologi Rekayasa) SIKLUS: Jurnal Teknik Sipil Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Jurnal Pendidikan Fisika dan Teknologi RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi Inersia : Jurnal Teknik Sipil Indonesian Journal on Geoscience Indonesian Journal on Geoscience Journal Innovation of Civil Engineering (JICE) Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Journal of the Civil Engineering Forum Makara Journal of Technology Edubiotik : Jurnal Pendidikan, Biologi dan Terapan Jurnal Geosaintek RADIAL: Jurnal Peradaban Sains, Rekayasa dan Teknologi
Lindung Zalbuin Mase, Lindung Zalbuin
Department Of Civil Engineering, University Of Bengkulu, Bengkulu,
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Unveiling Differences in Seismic Response: Comparative Study of Equivalent Linear and Nonlinear Analyses in the Central Coastal Region of Bengkulu, Indonesia Anggraini, Giovanny Dhebby; Mase, Lindung Zalbuin; Supriani, Fepy; Misliniyati, Rena; Amri, Khairul; Chaiyaput, Salisa
Journal of the Civil Engineering Forum Vol. 11 No. 1 (January 2025)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.13849

Abstract

Seismic response analysis is a key aspect in earthquake geotechnical engineering, as it provides important insights into the behavior of soils when exposedtoseismic forces. This research compares equivalent linear and non-linear models in the central coastal region of Bengkulu, which is known for its complex geology and high seismicity. By evaluating the accuracy and reliability of each model in predicting ground motion amplification, this research aims to provide useful recommendations for seismic design. The research method uses one-dimensional equivalent linear and nonlinear propagation modeling, namely Pressure Dependent Hyperbolic (PDH). The analysis resulted in the parameters of Peak Ground Acceleration (PGA), time history acceleration, spectral response acceleration, and amplification factor. The equivalent linear method consistently produced higher values for peak ground acceleration (PGA), spectral response acceleration, time history acceleration, and amplification factor compared to the nonlinear method. The analysis results show that the equivalent linear PGA values are in the range of 0.32g to 0.63g, while the nonlinear values range from 0.20g to 0.52g. The resulting spectral responses are averaged over the design spectrum within 0.2 s to 0.9 s, which can affect low- to high-ceilinged buildings. The equivalent linear amplification factor has a range of 1.59 to 1.91, while the nonlinear has a range of 0.80 to 1.59. Both methods have their advantages, with the nonlinear approach offering greater accuracy for large seismic events, while the equivalent linear model remains useful for preliminary analysis. Hopefully, these findings will improve the understanding of ground response in coastal areas and provide valuable data for improving infrastructure resilience in earthquake-prone areas around the world.
Studi Perbandingan Linier Ekuivalen dan Nonlinier pada Respon Seismik di Daerah Pesisir Annisa Zahara; Mase, Lindung Zalbuin; Fepy Supriani; Rena Misliniyati; Khairul Amri
Siklus : Jurnal Teknik Sipil Vol. 10 No. 2 (2024): Siklus : Jurnal Teknik Sipil
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/siklus.v10i2.20670

Abstract

Area pesisir Kota Bengkulu terletak pada posisi strategis di pertemuan lempeng Indo-Australia dan Eurasia, menjadikannya sebagai wilayah dengan risiko tinggi terhadap aktivitas seismik. Pertemuan lempeng ini menyebabkan intensitas gempa yang signifikan sehingga berdampak pada berbagai permasalahan geoteknik di kawasan tersebut. Penelitian ini bertujuan untuk mengetahui perbandingan dua metode analisis, yaitu linier ekuivalen dan nonlinier dalam menilai respon seismik pada wilayah pesisir Kota Bengkulu serta menguji keandalannya dalam analisis respon seismik. Metodologi yang digunakan mencakup studi literatur, pengumpulan data, dan analisis respon seismik menggunakan perbandingan metode linier ekuivalen dan nonlinier model Pressure Dependent Hyperbolic (PDH) yang menghasilkan Peak Ground Acceleration (PGA), percepatan respon spektra, dan faktor amplifikasi. Hasil analisis mengindikasikan respon spektra melampaui spektra desain pada periode 0,1-0,4 detik, yang dapat membahayakan bangunan berlantai rendah. Metode nonlinier memiliki faktor amplifikasi sebesar 0,91–1,52g, sementara metode linier ekuivalen sebesar 1,01–1,60g, yang menunjukkan bahwa metode linier ekuivalen berpotensi menyebabkan kerusakan struktural yang lebih besar. Selain itu, metode linier ekuivalen menghasilkan nilai PGA yang lebih tinggi di permukaan, tetapi lebih rendah di lapisan bawah jika dibandingkan dengan metode nonlinier. Secara keseluruhan, metode linier ekuivalen memberikan hasil yang lebih konservatif, terutama dalam analisis struktur sederhana dengan nilai PGA kecil. Sebaliknya, metode nonlinier lebih akurat dalam memperhitungkan perilaku nonlinier tanah, terutama pada percepatan gempa besar. Penelitian ini mengindikasikan perlu adanya studi lanjutan mengenai analisis bangunan gedung pada kawasan pesisir kota bengkulu untuk mengidentifikasi risiko yang lebih spesifik terkait infrastruktur yang ada.
The Investigation of Subsurface Beds using Microtremor and Geo-electric Methods in A Liquefied Area in Bengkulu City After The Bengkulu-Mentawai Earthquake Farid, Muhammad; Mase, Lindung Zalbuin; Fathani, Teuku Faisal
Indonesian Journal on Geoscience Vol. 11 No. 3 (2024)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.11.3.377-390

Abstract

Bengkulu Province, Indonesia, is one of regions prone to earthquake hazards. Daily seismic activity, albeit minor, and imperceptible to humans is common place. Data from the Meteorology, Climatology, and Geophysics Agency reveals an average of eight earthquakes per week. Earthquakes often trigger subsequent disasters such as tsunamis, landslides, and liquefaction. However, liquefaction-related phenomena are often overlooked in researchs, particularly concerning subsurface layers. A notable event occurred on September 12th, 2007, when a powerful 8.6 magnitude earthquake struck Indonesia, causing significant damage, particularly in Bengkulu City. This was followed by a liquefaction disaster in Tanah Patah Village, Bengkulu City. Consequently, the aim of this study is to assess the subsurface conditions in the liquefaction-affected area using geophysical techniques, including microtremor and geoelectric surveys. The data was analyzed to evaluate soil conditions in the affected zone. The resistivity values indicate a predominance of water and sand mixtures at depths of 0 - 20 m (ranging from 1.46 to 15.5 Ω·m in Geo_TP-1 and from 4.64 to 15.1 Ω·m in Geo_TP-2). These conditions can facilitate processes like condensation and water flow, leading to sand compaction and increase susceptibility to liquefaction. The findings reveal that loose sand dominates the subsurface layers, rendering them highly vulnerable to liquefaction during intense seismic events. Furthermore, the environmental characteristics of the studied area exacerbate its susceptibility to liquefaction. This study provides a comprehensive analysis of soil conditions in the liquefied zone of Bengkulu City.
Seismic Response Analysis In The Singaran Pati Sub-District Area of Bengkulu City Using Equivalent Linear And Non-Linear Approaches Priani, Anggela Agus; Misliniyati, Rena; Amri, Khairul; Mase, Lindung Zalbuin; ‎Hardiansyah, Hardiansyah
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 9, No 2 (2024): EDISI SEPTEMBER 2024
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v9i2.6101

Abstract

Bengkulu City is prone to earthquakes due to its proximity to the meeting point of two active tectonic plates. Singaran Pati sub-district has six villages that are the center of the sub-district government, trade in goods and services, defense, and health centers. This study aims to determine the ground response in the Singaran Pati sub-district due to earthquake wave propagation. The one-dimensional seismic wave propagation modeling method is linear equivalent and non-linear, similar to the Pressure Dependent Hyperbolic (PDH) model, which propagates earthquake waves from the bedrock to the surface. This research resulted in maximum earthquake acceleration or Peak Ground Acceleration (PGA) parameters, acceleration spectra response, earthquake wave acceleration, and amplification factor. The PGA value and the amplification factor of the equivalent linear and non-linear models are the largest in the eastern ring sub-district, 0.53 g and 0.45 g. The results of the acceleration spectra response analysis of equivalent linear and non-linear passed the SNI 1726: 2019 design with the most significant value in the equivalent linear model of 2.38 g while the non-linear was 2.01 g. The most considerable earthquake wave acceleration value in the equivalent linear model is 0.53 g, and the smallest value in the non-linear is 0.31 g. The results of this study show that the equivalent linear model produces higher values than the non-linear model. The equivalent linear model shows an overestimation that causes the maximum acceleration value to be greater than the non-linear model, so the non-linear model is more appropriate to use because it is more by the conditions in the field.
Studi Perbandingan Respons Seismik Tanah Berdasarkan Metode Linier Ekuivalen Dan Nonlinier Ahmad, Debby Ariansyah; Mase, Lindung Zalbuin; Fepy Supriani; Rena Misliniyati; Khairul Amri
Siklus : Jurnal Teknik Sipil Vol. 11 No. 1 (2025): Siklus: Jurnal Teknik Sipil
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/siklus.v11i1.20669

Abstract

Sejarah kegempaan Bengkulu mencatat bahwa gempa bumi berkekuatan 8,6 Mw tahun 2007 merupakan gempa terbesar yang melanda Provinsi Bengkulu. Gempa tersebut menimbulkan dampak yang besar sehingga banyak menelan korban jiwa dan menghancurkan fasilitas umum terutama di wilayah Pesisir Selatan Provinsi Bengkulu. Merujuk pada kejadian tersebut, dilakukan sebuah analisis respons seismik tanah. Penelitian ini bertujuan untuk membandingkan respons tanah terhadap gempa dengan metode linier ekuivalen dan metode nonlinier. Informasi yang berkaitan dengan profil tanah dan data gelombang gempa berdasarkan gempa yang pernah terjadi di Kota Bengkulu dikumpulkan. Tahapan analisis respons seismik linier ekuivalen dan nonlinier satu dimensi menggunakan program analisis respons seismik satu dimensi DeepSoil. Peak Ground Acceleration (PGA), riwayat waktu percepatan gempa, respons spektra percepatan, dan faktor amplifikasi dianalisis dalam studi ini. Penelitian memperlihatkan bahwa model linier ekuivalen menghasilkan nilai lebih besar dari pada model nonlinier dalam setiap parameter yang dianalisis. Nilai PGA model nonlinier adalah 0,31g - 0,51g. Sedangkan nilai PGA model linier ekuivalen adalah 0,46g - 0,60g. Nilai PGA menunjukkan bahwa area penelitian memiliki kerentanan seismik yang tinggi. Respons spektra percepatan telah melebihi desain seismik yang berlaku. Percepatan respons spektra lapisan mencapai nilai maksimum pada periode 0,2 sampai 1 detik dengan nilai percepatan 0,10g sampai 2,74g. Nilai amplifikasi metode nonlinier adalah 0,94 - 1,65. Sedangkan nilai amplifikasi metode linier ekuivalen adalah 1,38 - 1,82. Hasil analisis terhadap faktor amplifikasi dan respons spektra percepatan menunjukkan perlunya pembaruan desain respons seismik untuk perencanaan gedung di Pesisir Selatan Provinsi Bengkulu.
Spatial Distribution Analysis of Geotechnical Properties (Elastic Modulus, Cohesion, and Internal Friction Angle) in Soil Layers of Bengkulu City Hanipa, Rerisa Al; Kamal, Thomas Mustafa; Fikri, Muhammad Haikal; Mase, Lindung Zalbuin; Misliniyati, Rena; Supriani, Fepy; Refrizon, Refrizon
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 21 No. 1 (2025): May
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v21i1.78611

Abstract

This study investigates the spatial distribution of key geotechnical parameters—namely modulus of elasticity, cohesion, and internal friction angle—in the dominant soil types of Bengkulu City, Indonesia. Given the region’s complex geological structure and vulnerability to seismic activity, accurate assessment of soil characteristics is essential to support infrastructure development and mitigate geotechnical risks. Bengkulu lies between two active tectonic faults, making soil behavior analysis a crucial component of earthquake-resistant design. A total of 215 geotechnical data points were compiled from previous field investigations, covering a wide range of lithologies, including sandy soils, clay deposits, and various rock layers. The geotechnical parameters were spatially interpolated using the Inverse Distance Weighting (IDW) method to generate distribution maps that visualize the variation across different soil layers. This method was selected for its simplicity, effectiveness, and ability to provide weighted estimates based on spatial proximity. The analysis reveals that soils in the southern coastal region generally exhibit lower values of modulus of elasticity and cohesion, indicating a higher potential for deformation and shear failure. In contrast, central and northern areas tend to show higher geotechnical strength parameters, suggesting relatively stable ground conditions. The internal friction angle also increases with depth and material density, with hard rock zones showing the highest values. These findings contribute to the understanding of soil behavior in Bengkulu City and offer valuable insights for geotechnical engineers, urban planners, and disaster mitigation authorities. The spatial analysis of soil strength parameters provides a foundation for more resilient infrastructure planning and can be used as a reference for similar studies in other high-risk seismic regions.
Pemodelan Rute Evakuasi Saat Bencana Erupsi Gunung Dempo Kota Pagar Alam Ivana, Nurdila; Hardiansyah, Hardiansyah; Mase, Lindung Zalbuin; Misliniyati, Rena; Amri, Khairul
JTERA (Jurnal Teknologi Rekayasa) Vol 10, No 1: Juni 2025
Publisher : Politeknik Sukabumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31544/jtera.v10.i1.2025.147-156

Abstract

Gunung dempo yang terletak di Kota Pagar Alam memiliki potensi erupsi yang dapat membahayakan masyarakat di sekitarnya, sehingga dibutuhkan perencanaan jalur evakuasi yang efektif. Penelitian ini bertujuan untuk menganalisis kinerja jaringan jalan dalam mendukung proses evakuasi bencana erupsi Gunung Dempo. Analisis dilakukan menggunakan pendekatan four-steps model berdasarkan data geometri jalan, survei arus lalu lintas pada jam puncak, kuesioner dari masyarakat dan pengunjung pariwisata, serta pemodelan eksisting dan simulasi beberapa skenario saat evakuasi. Dari pemodelan eksisting akan dilanjutkan dengan beberapa skenario yaitu Skenario 1 saat evakuasi tanpa perubahan geometri jalan, Skenario 2 dengan pelebaran jalan, dan Skenario 3 yang dikembangkan dari Skenario 2 dengan mempertimbangkan penambahan jalan baru sebagai alternatif. Hasil kuesioner menunjukkan bahwa mayoritas masyarakat memilih menggunakan sepeda motor dibandingkan mobil sebagai alat transportasi saat evakuasi, yang mengindikasikan penggunaannya yang cepat dan fleksibel. Hasil analisis menggambarkan bahwa penyebaran arus lalu lintas pada pemodelan eksisting sesuai dengan kondisi nyata di lapangan. Penelitian ini menunjukkan bahwa hasil Skenario 1 dengan kondisi eksisting sekarang yang menggunakan volume evakuasi memperlihatkan bahwa pelayanan jalan sudah tidak memadai. Oleh karena itu, pada Skenario 2 dan Skenario 3 mempertimbangkan adanya pelebaran jalan dan penambahan jalur aman baru dalam mendukung proses evakuasi. Dari hasil analisis terlihat bahwa adanya pelebaran jalan dan penambahan jalan baru relatif lebih mampu mengakomodir peningkatan volume arus lalu lintas saat evakuasi.
Model Respons Seismik Tanah di Kecamatan Selebar Akibat Perambatan Gelombang Gempa Satu Dimensi Fahrezi, Zhehan; Misliniyati, Rena; Amri, Khairul; Mase, Lindung Zalbuin; Hardiansyah, Hardiansyah
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 30, Nomor 2, DESEMBER 2024
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v30i2.64462

Abstract

Penelitian ini dilakukan untuk mengetahui respons lapisan tanah akibat perambatan gelombang gempa di Kecamatan Selebar Kota Bengkulu. Studi ini diawali dengan investigasi di lapangan pada enam titik. Analisis respons seismik dibangun berdasarkan model perambatan gelombang satu dimensi dengan metode ekivalen linier dan non-linier. Gelombang gempa terskala Bengkulu-Mentawai tahun 2007 diterapkan sebagai gelombang input. Perbandingan PGA, percepatan respon spektra, dan faktor amplifikasi yang dihasilkan dari kedua metode disajikan dalam penelitian ini. Nilai PGA yang dihasilkan dengan metode ekivalen linier lebih besar sekitar 5% - 30% dari metode non-linier. Faktor amplifikasi yang dihasilkan dengan metode ekivalen linier mengalami penguatan lebih besar sekitar 3% - 30% dari metode non-linier. Percepatan spektra secara umum telah melewati desain seismik yang berlaku pada pada periode pendek, dengan nilai sebesar 1,2g – 2,1g untuk metode ekivalen linier dan 1,1g – 1,6g untuk metode non-linier. Maka perlu adanya pembaharuan desain seismik untuk perencanaan bangunan gedung di Kecamatan Selebar Kota Bengkulu.
Geospatial Modeling of Soil Plasticity Index and Water Content Distribution in Coastal Bengkulu: A Basis for Resilient Infrastructure Planning Putri, Melly Zuhadjar; Mase, Lindung Zalbuin; Amri, Khairul; Misliniyati, Rena; Hardiansyah, Hardiansyah; Refrizon, Refrizon
Journal Innovation of Civil Engineering (JICE) Vol 6 No 1 (2025)
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Islam Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33474/jice.v6i1.23561

Abstract

Bengkulu Province, located along the western coast of Sumatra, is one of Indonesia’s most seismically vulnerable regions due to its proximity to major tectonic boundaries. This study aims to enhance earthquake-resilient infrastructure planning by developing a two-dimensional geospatial model of key geotechnical parameters—Plasticity Index (PI) and water content (ѡ) —in the coastal zone. A total of 65 geotechnical observation points served to generate detailed maps by using the Inverse Distance Weighting (IDW) method down to 30 meters depth. The model integrates empirical correlations with statistical and spatial analyses to overcome the challenges of limited data. Results highlight distinct geotechnical variations across different soil layers and administrative regions, revealing zones with high liquefaction potential. The findings provide insight for engineers, urban planners, and disaster risk authorities in designing site-specific construction strategies. This research fills a critical gap in the current literature regarding Inverse Distance Weighting (IDW)-based geospatial modelling in seismically active areas. It offers a replicable framework for other coastal regions with similar geological contexts. Keywords: Plasticity Index; Water Content; Geospatial modeling; Inverse Distance Weighting (IDW)
Analysis of Road Network Vulnerability for Dempo Volcano Eruption Evacuation Aprilia, Gita; Hardiansyah, Hardiansyah; Mase, Lindung Zalbuin; Misliniyati, Rena; Amri, Khairul
Journal Innovation of Civil Engineering (JICE) Vol 6 No 1 (2025)
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Islam Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33474/jice.v6i1.23580

Abstract

South Sumatra is a province on the island of Sumatra, positioned along the boundary between the Indo-Australian Plate and the Eurasian Plate. The tectonic interaction between these plates has resulted in a mountain range that extends longitudinally from the island’s northern to southern regions, a geological condition that contributes to the area’s susceptibility to natural hazards, one example is the Dempo Volcano. This study uses the four-step model method to analyse the vulnerability of the road network on evacuation routes during the eruption of Dempo Volcano in Pagar Alam City. Eight road sections were observed. A comparison of traffic survey results and numerical modelling was conducted to assess the consistency of the model and also to predict critical conditions. Scenario 1 represents evacuation conditions without any changes to road geometry, while Scenario 2 represents evacuation conditions with modifications in the form of road widening. The analysis showed that most of the population prefers motorcycles as a mode of transport and the fastest route during evacuation, considering the faster evacuation time. Scenario 1 showed a surge in traffic volume, which became an obstacle to evacuation. Scenario 2 can increase capacity and improve traffic flow. The Vulnerability Index indicates that some road sections are vulnerable to evacuation impacts. Keywords: Disaster Evacuation; Four Steps Models; Dempo Volcano Eruption; Road Network Modelling; Vulnerability Index.
Co-Authors Aditia Febriansya AGUS SUYONO Ahmad, Debby Ariansyah Amalia , Dewi Ambar Susanto, Ambar Andika Sahadewa Andri Krisnandi Somantri Andri Krisnandi Somantri, Andri Krisnandi Anggraini, Giovanny Dhebby Annisa Zahara Chaiyaput, Salisa Dedi Setiawan Dewi Amalia Dhanty Kirana, Virgie Ega Yulita Sari, Ega Yulita Elvandani, Yogi Ery Radya Juarti, Ery Radya Fahrezi, Zhehan Faisal Estu Yulianto, Faisal Estu FEPY SUPRIANI Fikri, Muhammad Haikal Gita Aprilia Gulo, Elrich Gratiawan WD Gusta Gunawan Hanipa, Rerisa Al Hardiansyah Hardiansyah Hardiansyah Hendriawan Hendriawan Hendriawan, Hendriawan Ibrahim, Zaky Majid Ivana, Nurdila Junasiq, M. Afra Kamal, Thomas Mustafa Khairul Amri Khairul Amri Krisologus, Yulianto Petrus Kusuma, Yusmiati Likitlersuang, Suched lndah, Risma Nur Masyhur Irsyam Misliniyati , Rena Misliniyati, Rena Misliniyati, Rena Muhammad Farid Mulyadi Yuswandono Nirvana, Aura Pranata, Andhika Priani, Anggela Agus Purwaningsih, Annisa Indah Putri, Melly Zuhadjar Raafidiani, Reni Refrizon Refrizon Rena Misliniyati Rena Misliniyati Rifqi, Fianco Fakhri Sahadewa, Andika Sanniyah, Salwa Siti Saputra, Ramadhani Niko Sihombing, Atmy Verani R Sihombing, Atmy Verani R. Siti Patimah Suched Likitlersuang Supriani, Fepy Teuku Faisal Fathani Valetta, Fitria Leonni Yuandita, Defina ‎Hardiansyah, Hardiansyah